Allow overiding the remote hieradata link dest

In order to support the layouts being different on the management server
and the remote nodes, we need to also be able to override the location
of the link that gets made. Add a variable that defaults to the old
value.

Change-Id: I7434c1b1a9d79f04b3e872e750057d69490e80e0

defaults/main.yml

@@ -18,3 +18,4 @@ puppet_environment: production
 puppet_timeout: 30m
 futureparser: False
 mgmt_manifestpath: '{{ manifest_base }}/{{ puppet_environment }}'
+puppet_hieradata_link_dest: '{{ manifest_base }}/hieradata'

tasks/main.yaml

@@ -79,7 +79,7 @@
     - name: ensure hieradata manifest link is present
       file:
         src: "{{ '/etc/puppet/hieradata' if puppet_version == '3' else '/etc/puppetlabs/code/environments' }}"
-        dest: "{{ manifest_base }}/hieradata"
+        dest: "{{ puppet_hieradata_link_dest }}"
         state: link
       when: copy_hieradata