Remove atmosphere-ansible from Dockerfile

[edwins]

Description

With the new containerized deployment, atmosphere-ansible should be mounted as a volume, rather than part of the build for better manageability.

Checklist before merging Pull Requests

• New test(s) included to reproduce the bug/verify the feature
• [x ] Add an entry in the changelog
• [NA] Documentation created/updated (include links)
• [NA] If creating/modifying DB models which will contain secrets or sensitive information, PR to clank updating sanitation queries in roles/sanitary-sql-access/templates/sanitize-dump.sh.j2
• Reviewed and approved by at least one other contributor.

[coveralls]

Coverage decreased (-0.9%) to 37.445% when pulling e619184 on removing-atmosphere-ansible-Dockerfile into c1717ba on master.