Do not start barbican services with pkg install

barbican-worker and barbican-api manage the same nss database.
To avoid races during installation:

 * Make sure barbica-worker is started after api when enabled
 * Do not install barbican-worker automatically with package install

Change-Id: I82c415294e24bd6e2221f0d05f29ab82cac8f9e0
Related-Prod: PROD-26988
diff --git a/barbican/server.sls b/barbican/server.sls
index b64e34c..79f58b9 100644
--- a/barbican/server.sls
+++ b/barbican/server.sls
@@ -7,12 +7,24 @@
   - barbican._ssl.rabbitmq
   - barbican.db.offline_sync
 
+barbican_policy-rc.d_present:
+  file.managed:
+    - name: /usr/sbin/policy-rc.d
+    - mode: 755
+    - contents: |
+        #!/bin/sh
+        exit 101
+
 barbican_server_packages:
   pkg.installed:
   - names: {{ server.pkgs }}
   - require_in:
     - sls: barbican._ssl.mysql
     - sls: barbican._ssl.rabbitmq
+  - require:
+    - file: barbican_policy-rc.d_present
+  - require_in:
+    - file: barbican_policy-rc.d_absent
 
 /etc/barbican/barbican.conf:
   file.managed:
@@ -187,6 +199,8 @@
   {%- endif %}
   - watch:
     - file: /etc/barbican/barbican.conf
+  - require:
+    - barbican_server_services
 {%- else %}
 barbican_async_workers_disable:
   service.dead:
@@ -217,4 +231,9 @@
 {%- endif %}
 
 {%- endif %}
+
+barbican_policy-rc.d_absent:
+  file.absent:
+    - name: /usr/sbin/policy-rc.d
+
 {%- endif %}