Updates to versioning system.

https://github.com/ansible/awx/issues?q=%22--first-parent%22

installer/roles/image_build/tasks/main.yml

@@ -1,6 +1,6 @@
 ---
 - name: Get Version from checkout if not provided
-  shell: "git describe --long --first-parent | sed 's/\\-g.*//' | sed 's/\\-/\\./'"
+  shell: "{{ lookup('file', playbook_dir + '/../VERSION') }}"
   delegate_to: localhost
   register: awx_version_command
   when: awx_version is not defined