Add ability to override mgmt manifest path

We have it currently hardcoded that the manifests on the management
server are going to have an environment path. Add a variable to allow
override of that idea.

Change-Id: I226c030332ff93c3ee74650c7ab725994971f007
Needed-By: https://review.openstack.org/592763

defaults/main.yml

@@ -17,3 +17,4 @@ puppet_environment_basedir: '/opt/system-config/'
 puppet_environment: production
 puppet_timeout: 30m
 futureparser: False
+mgmt_manifestpath: '{{ manifest_base }}/{{ puppet_environment }}'

tasks/main.yaml

@@ -73,7 +73,7 @@
 
     - name: copy puppet modules
       synchronize:
-        src: "{{ manifest_base }}/{{ puppet_environment }}"
+        src: "{{ mgmt_manifestpath }}"
         dest: "{{ manifest_base }}"
 
     - name: ensure hieradata manifest link is present