add owner and group support

[majakubiec]

This commit adds owner and group variable support and it should work as shown in quick-start-guide but it wasn't working before. When you set owner(group) and uid(gid) variable is not set, it sets uid to a value of the owner(group) id. When uid(gid) variable is set then owner(group) field is ignored

[vedharish]

Bump

Have tested that this PR works fine.