Only ask RHEL specific questions when run on RHEL

Putting the RHEL specific questions into a separate group and
adding a is_rhel pre-condition so non-RHEL users won't get bugged
in interactive mode.

Also, one of the tests will no longer make sense on non-RHEL
platforms and has therefore been disarmed on those. Since all tests
are always also run on RHEL, this should be of no concern.

Change-Id: I7f39762dd9ad60545bff993ec99c8e4acfe10e2e
Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=921545

packstack/plugins/serverprep_901.py

@@ -6,6 +6,7 @@ import os
 import uuid
 import logging
 import datetime
+import platform
 
 from packstack.installer import basedefs
 from packstack.installer import common_utils as utils
@@ -53,8 +54,9 @@ def initConfig(controllerObject):
                    "CONF_NAME"       : "CONFIG_REPO",
                    "USE_DEFAULT"     : False,
                    "NEED_CONFIRM"    : False,
-                   "CONDITION"       : False },
+                   "CONDITION"       : False }],
 
+            "RHEL": [
                   {"CMD_OPTION"      : "rh-username",
                    "USAGE"           : "To subscribe each server with Red Hat subscription manager, include this with CONFIG_RH_PW",
                    "PROMPT"          : "To subscribe each server to Red Hat enter a username here",
@@ -227,6 +229,9 @@ def initConfig(controllerObject):
                    "NEED_CONFIRM"    : False,
                    "CONDITION"       : False }]}
 
+    def is_on_rhel(config):
+        return is_rhel()
+
     def filled_satellite(config):
         return bool(config.get('CONFIG_SATELLITE_URL'))
 
@@ -241,6 +246,13 @@ def initConfig(controllerObject):
               "POST_CONDITION"        : False,
               "POST_CONDITION_MATCH"  : True},
 
+             {"GROUP_NAME"            : "RHEL",
+              "DESCRIPTION"           : "RHEL config",
+              "PRE_CONDITION"         : is_on_rhel,
+              "PRE_CONDITION_MATCH"   : True,
+              "POST_CONDITION"        : False,
+              "POST_CONDITION_MATCH"  : True},
+
              {"GROUP_NAME"            : "SATELLITE",
               "DESCRIPTION"           : "RHN Satellite config",
               "PRE_CONDITION"         : filled_satellite,
@@ -261,6 +273,10 @@ def initConfig(controllerObject):
         controller.addGroup(group, paramList)
 
 
+def is_rhel():
+    return 'Red Hat Enterprise Linux' in platform.linux_distribution()[0]
+
+
 def run_rhn_reg(host, server_url, username=None, password=None,
                 cacert=None, activation_key=None, profile_name=None,
                 proxy_host=None, proxy_user=None, proxy_pass=None,
@@ -362,6 +378,9 @@ def initSequences(controller):
 def serverprep():
     config = controller.CONF
 
+    rh_username = None
+    sat_url = None
+    if is_rhel():
         rh_username = config["CONFIG_RH_USER"].strip()
         rh_password = config["CONFIG_RH_PW"].strip()
 
@@ -417,7 +436,7 @@ def serverprep():
 
         # If RHOS has been installed we can diable EPEL when installing openstack-utils
         yum_opts = ""
-        if config["CONFIG_RH_USER"].strip():
+        if rh_username:
             yum_opts += "--disablerepo='epel*'"
 
         server.append("rpm -q epel-release && "

tests/test_plugin_serverprep.py

@@ -28,6 +28,11 @@ class OSPluginUtilsTestCase(PackstackTestCaseMixin, TestCase):
     def test_rhn_creds_quoted(self):
         """Make sure RHN password is quoted"""
 
+        # On non-RHEL, the CONFIG_{RH,SATELLITE} options are never set,
+        # i.e. this test would always fail. Therefore, only run it on RHEL.
+        if not serverprep_901.is_rhel():
+            return
+
         password = "dasd|'asda%><?"
 
         serverprep_901.controller.CONF["CONFIG_KEYSTONE_HOST"] = "1.2.3.4"