Ability to provide demo image's properties

Is really needed when when non-standard image is used.
Provide it as a string, luckily, glance_image can accept properties
as a string, it has simple parser for "key=value[,key1=value2]..."-like inputs.

Change-Id: Ib85c2165c0b8c7f0732cf333f5ad8709e88063db

docs/packstack.rst

@@ -995,6 +995,9 @@ Provisioning demo config
 **CONFIG_PROVISION_IMAGE_FORMAT**
     Format for the demo image (default "qcow2").
 
+**CONFIG_PROVISION_IMAGE_PROPERTIES**
+    Properties of the demo image (none by default).
+
 **CONFIG_PROVISION_IMAGE_SSH_USER**
     User to use when connecting to instances booted from the demo image.
 

packstack/plugins/provision_700.py

@@ -135,6 +135,19 @@ def initConfig(controller):
              "NEED_CONFIRM": False,
              "CONDITION": False},
 
+            {"CMD_OPTION": "provision-image-properties",
+             "PROMPT": ("Enter the comma-separated list of key=value pairs "
+                        "to set as the properties of the demo image"),
+             "OPTION_LIST": False,
+             "VALIDATORS": [],
+             "DEFAULT_VALUE": "",
+             "MASK_INPUT": False,
+             "LOOSE_VALIDATION": True,
+             "CONF_NAME": "CONFIG_PROVISION_IMAGE_PROPERTIES",
+             "USE_DEFAULT": False,
+             "NEED_CONFIRM": False,
+             "CONDITION": False},
+
             {"CMD_OPTION": "provision-image-ssh-user",
              "PROMPT": ("Enter the name of a user to use when connecting "
                         "to the demo image via ssh"),

packstack/puppet/modules/packstack/manifests/provision/glance.pp

@@ -3,6 +3,7 @@ class packstack::provision::glance ()
     $image_name               = hiera('CONFIG_PROVISION_IMAGE_NAME')
     $image_source             = hiera('CONFIG_PROVISION_IMAGE_URL')
     $image_format             = hiera('CONFIG_PROVISION_IMAGE_FORMAT')
+    $image_properties         = hiera('CONFIG_PROVISION_IMAGE_PROPERTIES')
     $uec_image_name           = hiera('CONFIG_PROVISION_UEC_IMAGE_NAME')
     $uec_image_source_kernel  = hiera('CONFIG_PROVISION_UEC_IMAGE_KERNEL_URL')
     $uec_image_source_ramdisk = hiera('CONFIG_PROVISION_UEC_IMAGE_RAMDISK_URL')
@@ -14,6 +15,7 @@ class packstack::provision::glance ()
       container_format => 'bare',
       disk_format      => $image_format,
       source           => $image_source,
+      properties       => $image_properties
     }
 
     if str2bool(hiera('CONFIG_PROVISION_TEMPEST')) {

releasenotes/notes/demo-image-properties-9994f2981a8c00a1.yaml

@@ -0,0 +1,4 @@
+---
+features:
+  - New config parameter CONFIG_PROVISION_IMAGE_PROPERTIES
+    introduced, useful when provided image needs custom parameters