Changes for building a ppc64le stemcell for Power8 Ubuntu LE

Assumes that gccgo is installed under /usr/local/gccgo in the machine running the stemcell build commands.
Hello cppforlife, I have added a commit to enable bosh micro and also addressed your comments for removing the parens according to ruby style. It seems that the Travis build is failing with an error from the go agent unit tests. I haven't touched the go agent in this commit, so I don't understand why the unit tests are failing. Can you please review? thanks I.P