Revert "Connectivity from workers to gearmand on zuul."

This reverts commit f61a6e53dd3633346257f4d1c1b23cc661e057f5.

Change-Id: I8c94cdeff5bdef2160ce74ff2c1170ea0c25ae3b
Reviewed-on: https://review.openstack.org/26183
Approved: Clark Boylan <clark.boylan@gmail.com>
Reviewed-by: Clark Boylan <clark.boylan@gmail.com>
Tested-by: Jenkins