add CUSTOM_THEME_PATH variable

* It allows to specify custom theme path

Change-Id: I5fa9e232427f9e3bef4662b01421b5dbbcaefeed

manifests/init.pp

@@ -209,6 +209,10 @@
 #    (optional) Tuskar-UI - Deployment mode ('poc' or 'scale')
 #    Defaults to 'scale'
 #
+#  [*custom_theme_path*]
+#    (optional) The directory location for the theme (e.g., "static/themes/blue")
+#    Default to undefined
+#
 # === Examples
 #
 #  class { 'horizon':
@@ -261,6 +265,7 @@ class horizon(
   $tuskar_ui_ironic_discoverd_url      = 'http://127.0.0.1:5050',
   $tuskar_ui_undercloud_admin_password = undef,
   $tuskar_ui_deployment_mode           = 'scale',
+  $custom_theme_path                   = undef,
   # DEPRECATED PARAMETERS
   $can_set_mount_point                 = undef,
   $vhost_extra_params                  = undef,

spec/classes/horizon_init_spec.rb

@@ -101,7 +101,8 @@ describe 'horizon' do
           :neutron_options         => {'enable_lb' => true, 'enable_firewall' => true, 'enable_quotas' => false, 'enable_security_group' => false, 'enable_vpn' => true,
                                        'enable_distributed_router' => false, 'enable_ha_router' => false, 'profile_support' => 'cisco', },
           :file_upload_temp_dir    => '/var/spool/horizon',
-          :secure_cookies          => true
+          :secure_cookies          => true,
+          :custom_theme_path       => 'static/themes/green'
         })
       end
 
@@ -132,6 +133,7 @@ describe 'horizon' do
           'OPENSTACK_ENDPOINT_TYPE = "internalURL"',
           'SECONDARY_ENDPOINT_TYPE = "ANY-VALUE"',
           'API_RESULT_LIMIT = 4682',
+          "CUSTOM_THEME_PATH = 'static/themes/green'",
           "            'level': 'DEBUG',",
           "            'handlers': ['syslog'],",
           'COMPRESS_OFFLINE = False',

templates/local_settings.py.erb

@@ -281,6 +281,16 @@ EXTERNAL_MONITORING = <%= @horizon_app_links %>
 #     'reverse': False,
 # }
 
+# CUSTOM_THEME_PATH allows to set to the directory location for the
+# theme (e.g., "static/themes/blue"). The path can either be
+# relative to the openstack_dashboard directory or an absolute path
+# to an accessible location on the file system.
+# If not specified, the default CUSTOM_THEME_PATH is
+# static/themes/default.
+<% if @custom_theme_path %>
+CUSTOM_THEME_PATH = '<%= @custom_theme_path %>'
+<% end %>
+
 # The Horizon Policy Enforcement engine uses these values to load per service
 # policy rule files. The content of these files should match the files the
 # OpenStack services are using to determine role based access control in the