Add R4 release notes

Add new page and link for R4 release notes.
Add release notes content.

Change-Id: I3747b1f06d9f9b5747f73509c5c25df32da6a799
Signed-off-by: MCamp859 <maryx.camp@intel.com>
Signed-off-by: Bruce Jones <bruce.e.jones@intel.com>
Signed-off-by: MCamp859 <maryx.camp@intel.com>

doc/source/releasenotes/index.rst

@@ -9,6 +9,8 @@ You can find details about a release on the specific release page.
 +------------------------+---------------------+-------------------------------+
 | Version                | Release Date        | Notes                         |
 +========================+=====================+===============================+
+| StarlingX R4.0         | 2020-08             | :doc:`r4_release`             |
++------------------------+---------------------+-------------------------------+
 | StarlingX R3.0         | 2019-12             | :doc:`r3_release`             |
 +------------------------+---------------------+-------------------------------+
 | StarlingX R2.0.1       | 2019-10             | :doc:`r2_0_1_release`         |
@@ -26,6 +28,7 @@ You can find details about a release on the specific release page.
    r2_release
    r2_0_1_release
    r3_release
+   r4_release
 
 ------------------------------
 Project-specific release notes

doc/source/releasenotes/r4_release.rst

@@ -0,0 +1,180 @@
+==================
+R4.0 Release Notes
+==================
+
+.. contents::
+   :local:
+   :depth: 1
+
+---------
+ISO image
+---------
+
+The pre-built ISO and Docker images for StarlingX release 4.0 are located at
+`CENGN’s StarlingX mirror
+<http://mirror.starlingx.cengn.ca/mirror/starlingx/release>`_.
+
+------
+Branch
+------
+
+The source code for StarlingX release 4.0 is available in the r/stx.4.0
+branch in the `StarlingX repositories <https://opendev.org/starlingx>`_.
+
+----------
+Deployment
+----------
+
+A system install is required to deploy StarlingX release 4.0. There is no
+upgrade path from previous StarlingX releases. For detailed instructions, see
+the :doc:`R4.0 Installation Guides </deploy_install_guides/r4_release/index>`.
+
+-----------------------------
+New features and enhancements
+-----------------------------
+
+The list below provides a detailed list of new features and links to the
+associated user guides (if applicable).
+
+* Intel FPGA support for Kubernetes
+
+  The Intel N3000 FPGA Programmable Acceleration Card is now supported
+  in StarlingX, including support for orchestrating updates to the
+  card's firmware.
+
+  Guide: :doc:`Host FPGA Configuration for the Intel N3000 FPGA Programmable
+  Acceleration Card </configuration/intel_n3000_fpga>`
+
+* Kata Containers
+
+  Workloads can now be deployed in Kata Containers by StarlingX, which
+  provides a higher degree of isolation than workloads in generic containers.
+
+  Guide: :doc:`How to run Kata Containers with Kubernetes on StarlingX
+  </operations/kata_container>`
+
+* Active Directory Integration for Kubernetes APIs
+
+  StarlingX administrators can now deploy an optional system application
+  to support using Windows Active Directory for authentication of the
+  Kubernetes API.
+
+  Guide: :doc:`Authenticate Kubernetes Users with Windows Active Directory
+  Server </configuration/k8s_auth_winactivedir>`
+
+* Certificate Manager Integration
+
+  StarlingX now provides a Certification Manager to enable automated
+  certificate issuance, monitor certificate expiration dates, and configure
+  an auto-renew process.
+
+  Guide: :doc:`Enable secure HTTPS access and manage certificates </configuration/cert_config>`
+
+* Time-Sensitive Networking (TSN) in Kata Containers
+
+  Time-Sensitive Networking has been enabled for workloads running in Kata
+  Containers.
+
+  Guide: :doc:`Enable TSN in Kata Containers
+  </developer_resources/stx_tsn_in_kata>`
+
+* Upversion OpenStack services
+
+  The built-in OpenStack services, including Keystone, Horizon, Barbican, and
+  others, have been updated to Train. For more details, consult the
+  `OpenStack documentation for Train <https://docs.openstack.org/train/>`_.
+
+* Upversion OpenStack application
+
+  The built-in OpenStack application has been updated to Ussuri. For
+  more details, consult the `OpenStack documentation for Ussuri
+  <https://docs.openstack.org/ussuri/>`_.
+
+* Kubernetes support in backup and restore functionality
+
+  Back up and restore is now available for workloads running in
+  Kubernetes pods.
+
+  Guide: :doc:`Backup and restore your deployment </developer_resources/backup_restore>`
+
+* Kubernetes manual upgrade capability
+
+  StarlingX now has the capability of updating the Kubernetes images
+  installed on the platform.
+
+  Guide: :doc:`Upgrade your Kubernetes version </configuration/k8s_upgrade>`
+
+* Redfish virtual media support
+
+  StarlingX now supports the Redfish Virtual Media Controller to
+  support a secure BMC based ISO image boot.
+
+* Kernel rebase to 4.18
+
+  The Linux kernel used by StarlingX has been upgraded to version 4.18 as
+  provided in CentOS 8.
+
+* Upversion Kubernetes components
+
+  Kubernetes was upversioned to v1.18.1, Calico was upversioned to v3.12, and
+  Helm was upversioned to v3.
+
+* Layered build
+
+  StarlingX builds have been monolithic and time consuming. The new Layered
+  build system decomposes the system into separate layers that can be built
+  independently. Both Layered and Monolithic builds are supported in this
+  release.
+
+  Guides: :doc:`Layered build reference (overview) </developer_resources/Layered_Build>`
+  and :doc:`Layered build guide (step by step instructions) </developer_resources/layered_build_guide>`
+
+* Open Platform Communications Unified Architecture (OPC UA) support
+
+  OPC UA is a data exchange standard for industrial communication in the
+  Industrial IoT (IIoT) category. StarlingX now supports OPC UA.
+
+  Guide: :doc:`How to enable OPC UA on StarlingX </developer_resources/stx_opcua>`
+
+----------
+Bug status
+----------
+
+**********
+Fixed bugs
+**********
+
+This release provides fixes for a number of defects. Refer to the StarlingX bug
+database to review the `R4.0 fixed defects
+<https://bugs.launchpad.net/starlingx/+bugs?field.searchtext=&orderby=-importance&search=Search&field.status%3Alist=FIXRELEASED&field.tag=stx.4.0>`_.
+
+*********
+Open bugs
+*********
+
+Use the StarlingX bug database to review `R4.0 open bugs
+<https://bugs.launchpad.net/starlingx/+bugs?field.searchtext=&orderby=-importance&field.status%3Alist=NEW&field.status%3Alist=CONFIRMED&field.status%3Alist=TRIAGED&field.status%3Alist=INPROGRESS&field.status%3Alist=FIXCOMMITTED&field.status%3Alist=FIXRELEASED&field.status%3Alist=INCOMPLETE_WITH_RESPONSE&field.status%3Alist=INCOMPLETE_WITHOUT_RESPONSE&assignee_option=any&field.assignee=&field.bug_reporter=&field.bug_commenter=&field.subscriber=&field.structural_subscriber=&field.tag=stx.4.0+not-yet-in-r-stx40&field.tags_combinator=ALL&field.has_cve.used=&field.omit_dupes.used=&field.omit_dupes=on&field.affects_me.used=&field.has_patch.used=&field.has_branches.used=&field.has_branches=on&field.has_no_branches.used=&field.has_no_branches=on&field.has_blueprints.used=&field.has_blueprints=on&field.has_no_blueprints.used=&field.has_no_blueprints=on&search=Search>`_.
+
+At the time of release, the following R4.0 bugs were open:
+
+* `1890350 <https://bugs.launchpad.net/starlingx/+bug/1890350>`_
+* `1887589 <https://bugs.launchpad.net/starlingx/+bug/1887589>`_
+* `1870999 <https://bugs.launchpad.net/starlingx/+bug/1870999>`_
+* `1879018 <https://bugs.launchpad.net/starlingx/+bug/1879018>`_
+* `1881915 <https://bugs.launchpad.net/starlingx/+bug/1881915>`_
+* `1886429 <https://bugs.launchpad.net/starlingx/+bug/1886429>`_
+* `1888546 <https://bugs.launchpad.net/starlingx/+bug/1888546>`_
+
+-----------------
+Known limitations
+-----------------
+
+The following are known limitations in this release. Workarounds
+are suggested where applicable. Note that these limitations are considered
+temporary and will likely be resolved in a future release.
+
+* `1887589 <https://bugs.launchpad.net/starlingx/+bug/1887589>`_ Creating a
+  new instance with Horizon fails.
+
+
+