feat: upgrade gitlab to 13.7.2 and add new bigbang features

Summary

Upgrade gitlab to app version 13.7.2 chart version 4.7.2. Also add feature support for sso, database, and object storage.

.gitlab/issue_templates/bug.md

+# Bug
+
+## Description
+
+Describe the problem, what were you doing when you noticed the bug?
+
+Provide any steps possible used to reproduce the error (ideally in an isolated fashion).
+
+## BigBang Version
+
+What version of BigBang were you running?