[Hawkular-dev] travis secure entries in the travis.yml

Hello, as you probably know travis allows to encrypt a secret in the travis.yml. I am not going to question how super secret it is, but could we please add a comment on those lines to know what env property it encodes? Now, it's almost impossible to find out which line is safe to delete in here: http://git.io/vO6Lz I believe there are some unused lines. jk