Conditional service startup for contrail components

To support upgrades, we need a way to control of services
start-up after components deployment. If a flag variable is found
in Hiera, manifests do not ensure services to be started.
Also, ubuntu-specific tweaks were added to manifests to prevent
automation service starts and restarts after package installation
or upgrades

Change-Id: I13c607078fc2fd4f26a90665a217b1c40288ed04

deployment_scripts/puppet/modules/contrail/manifests/analytics.pp

@@ -27,6 +27,10 @@ class contrail::analytics {
 
   Exec { path => '/usr/bin:/usr/sbin:/bin:/sbin' }
 
+  tweaks::ubuntu_service_override { 'supervisor-analytics':
+    package_name => 'contrail-analytics',
+  }
+
 # Packages
   package { 'redis-server': } ->
   package { 'contrail-analytics': } ->
@@ -81,7 +85,7 @@ class contrail::analytics {
   }
 
   service { 'supervisor-analytics':
-    ensure    => running,
+    ensure    => $contrail::service_ensure,
     enable    => true,
     require   => [Package['contrail-openstack-analytics'],
                     Service['redis-server'],