Move database.yml.erb to template for rails containers
Summary
Broken out from #847 (closed), improving DRY patterns
Move the content of database.yml.erb to a template, and have all rails based containers pull this into their ConfigMaps
Broken out from #847 (closed), improving DRY patterns
Move the content of database.yml.erb to a template, and have all rails based containers pull this into their ConfigMaps