Updated openstack/openstack
Project: openstack/heat  f50aa49c6ef66ee8f055531f464d06b44b2a36af

Skip tests when loading plugins

All python files in plugins were automatically loaded which would
add the dependencies of the tests to the plugins.

Let skip the files in the .tests. namespace

Closes-Bug: #1292655
Change-Id: I25eac87559b5852e9645fbb84c8b4d07b4c1ff42