[tls] Make a cert SLS IDs globally unique

At the moment most of openstack formulas have
the same ids of certs at state files, e.g.:

 nova/server.sls   - rabbitmq_ca : file_managed
 glance/server.sls - rabbitmq_ca : file_managed

So, any attempt to use the:

   salt-call state.apply

fails with:

  Detected conflicting IDs, SLS IDs need to be
  globally unique.

Change-Id: Iedb006ecab067638118b392bd2945ea139236a72
diff --git a/keystone/server.sls b/keystone/server.sls
index 9996eb3..3608855 100644
--- a/keystone/server.sls
+++ b/keystone/server.sls
@@ -228,7 +228,7 @@
   {%- endif %}
   - watch:
     {%- if server.notification and server.message_queue.get('ssl',{}).get('enabled', False) %}
-    - file: rabbitmq_ca
+    - file: rabbitmq_ca_keystone_server
     {%- endif %}
     - file: /etc/keystone/keystone.conf
 {%- endif %}
@@ -438,7 +438,7 @@
 {%- endif %} {# end noservices #}
 
 {%- if server.database.get('ssl',{}).get('enabled',False)  %}
-mysql_ca:
+mysql_ca_keystone_server:
 {%- if server.database.ssl.cacert is defined %}
   file.managed:
     - name: {{ server.database.ssl.cacert_file }}
@@ -457,7 +457,7 @@
 
 
 {%- if server.notification and server.message_queue.get('ssl',{}).get('enabled', False) %}
-rabbitmq_ca:
+rabbitmq_ca_keystone_server:
 {%- if server.message_queue.ssl.cacert is defined %}
   file.managed:
     - name: {{ server.message_queue.ssl.cacert_file }}