Fix .push python-ibm-db-django polluting common attribute

A Common attribute was having a dashboard specific package added to it.
This has side effects as it will effect other cookbooks using that attribute.

* Create attrbute to hold dashboard specific database packages
* Tests unchanged as they are still correct outcome

Change-Id: I9dae9dfc7a118203a80492160514cbf7d0f975e9
Closes-Bug: #1364508

CHANGELOG.md

@@ -9,6 +9,7 @@ This file is used to list changes made in each version of the openstack-dashboar
 * Sync conf files with Juno
 * Add optional section support for local_settings template
 * Update local_settings from 0644 to 0640
+* Fix python-ibm-db-django package polluting common package attribute
 
 ## 9.1
 * python_packages database client attributes have been moved to the -common cookbook

attributes/default.rb

@@ -62,6 +62,15 @@ default['openstack']['dashboard']['secret_key_content'] = nil
 
 default['openstack']['dashboard']['webroot'] = '/'
 
+# Dashboard specific database packages
+# Put common ones here and platform specific ones below.
+default['openstack']['dashboard']['db_python_packages'] = {
+  db2: [],
+  mysql: [],
+  postgresql: [],
+  sqlite: []
+}
+
 case node['platform_family']
 when 'rhel'
   default['openstack']['dashboard']['horizon_user'] = 'apache'
@@ -73,7 +82,7 @@ when 'rhel'
   default['openstack']['dashboard']['login_url'] = "#{node['openstack']['dashboard']['webroot']}auth/login/"
   default['openstack']['dashboard']['logout_url'] = "#{node['openstack']['dashboard']['webroot']}auth/logout/"
   default['openstack']['dashboard']['login_redirect_url'] = node['openstack']['dashboard']['webroot']
-  default['openstack']['db']['python_packages']['db2'].push 'python-ibm-db-django'
+  default['openstack']['dashboard']['db_python_packages']['db2'] = ['python-ibm-db-django']
   default['openstack']['dashboard']['platform'] = {
     'horizon_packages' => ['openstack-dashboard'],
     'memcache_python_packages' => ['python-memcached'],

recipes/server.rb

@@ -68,6 +68,8 @@ db_pass = get_password 'db', 'horizon'
 db_info = db 'dashboard'
 
 python_packages = node['openstack']['db']['python_packages'][db_info['service_type']]
+# Add dashboard specific database packages
+python_packages += Array(node['openstack']['dashboard']['db_python_packages'][db_info['service_type']])
 (platform_options['horizon_packages'] + python_packages).each do |pkg|
   package pkg do
     action :upgrade