Add openshift support for spotbugs

What does this MR do?

Adds support for Open Shift.

✅ Passing job in Open Shift instance

The permissions granted to the /root directory for the group are +rwx. This is needed because there is a script that is part of the analyzer that sources /root/.bashrc. I attempted to limit the +x permission to just /root/.bashrc and /root/.bash_profile but that was given permission denied errors. It would be ideal if we could limit the permissions given to the entire /root directory to just +rw but I wasn't able to get that working.

What are the relevant issue numbers?

gitlab-org/gitlab#323118 (closed)

Does this MR meet the acceptance criteria?

• Changelog entry added
• Documentation created/updated for GitLab EE, if necessary
• Documentation created/updated for this project, if necessary
• Documentation reviewed by technical writer or follow-up review issue created
• Tests added for this feature/bug
• Job definition updated, if necessary
  • Auto-DevOps template (also in CE)
  • Job definition example
  • CI Templates (to be removed)
  • Vendored CI Templates (also in CE)
• Conforms to the code review guidelines
• Conforms to the Go guidelines
• Security reports checked/validated by reviewer