Make pkg_locations overridable easier

In case a deployer wants to override pkg_locations (for example
in order to add extra locations), this variable should be overriable
in user space.

This moves the variable to group_vars to make it overridable in
userspace easily.

Change-Id: I6a4616fe80d7bd9ed0fa6f5d4a88c18d0d75cf8c

group_vars/repo_all.yml

@@ -66,3 +66,8 @@ repo_build_pip_no_binary:
 # Set the build tag and the repo version
 repo_build_release_tag: "{{ openstack_release }}"
 repo_build_os_distro_version: "{{ os_distro_version }}"
+
+pkg_locations:
+  - "{{ playbook_dir }}/../"
+  - /etc/ansible/roles
+  - /etc/openstack_deploy

playbooks/repo-build.yml

@@ -125,11 +125,6 @@
     - role: "repo_build"
   vars_files:
     - defaults/repo_packages/openstack_services.yml
-  vars:
-    pkg_locations:
-      - "{{ playbook_dir }}/../"
-      - /etc/ansible/roles
-      - /etc/openstack_deploy
   environment: "{{ deployment_environment_variables | default({}) }}"
   tags:
     - repo-build