v2.4.14: new formats and bugfixes

New Features:

• support for R repositories (#274, #307)
• support for Helm repositories (#284)
• support for p2 repositories (#301)
• support for conda repositories (#295)
• support for go repositories (#298)
• maven configuration is now optional as all other formats (#293)

Bugfixes and maintenance:

• Fixed an issue with lost+found when nexus data directory is on an ext[2-4] mount (#280)
• Added molecule docker plugin to python requirements (Hotfix 2583b7b)
• Fixed new ansible-lint rules for ansible v2.10 (#304)
• Fixed an issue when docker configuration is enabled but there are no declared docker proxy repositories (#294)

Thanks for contributions: @enicholson125 @ktreptow @ljackiewicz @Serienmorder @delhage @pogosoftware @vitkhab