gerrit.user and gerrit.pass being pulled in from global git config

Change-Id: I25e23032c56a122d0fccf68b1610015afe6cbf74
Merge branch 'go' of https://github.com/commnerd/grt into go

Conflicts:
	git-grt.go

Change-Id: I333a839ef2a861dcb7e61b00e1f7adcae4bd5563