Apply shared openstack actions for mitaka_trusty template

Additionally:
- fix 'Restart Apache' state for trusty release
- set correct pin for openstack repository (PROD-21071)
- increase priority for openstack repository (PROD-22827)

Change-Id: I385ddf8bc4b7f7a3a6272cb9ef88c8d5ee50849f
diff --git a/tcp_tests/templates/shared-openstack.yaml b/tcp_tests/templates/shared-openstack.yaml
index 032000b..18cf152 100644
--- a/tcp_tests/templates/shared-openstack.yaml
+++ b/tcp_tests/templates/shared-openstack.yaml
@@ -28,14 +28,14 @@
 
 - description: Restart apache due to PROD-10477
   cmd: salt --hard-crash --state-output=mixed --state-verbose=False 'ctl*'
-    cmd.run "systemctl restart apache2"
+    cmd.run "service apache2 restart"
   node_name: {{ HOSTNAME_CFG01 }}
   retry: {count: 1, delay: 15}
   skip_fail: false
 
 - description: Check apache status to PROD-10477
   cmd: salt --hard-crash --state-output=mixed --state-verbose=False 'ctl*'
-    cmd.run "systemctl status apache2"
+    cmd.run "service apache2 status"
   node_name: {{ HOSTNAME_CFG01 }}
   retry: {count: 1, delay: 15}
   skip_fail: false