Updated openstack/openstack
Project: openstack/tempest  e869ff3d32014aa918ccaee28c7ab9bfa94c1461

Bump working version to 4

With the tempest-3 tag being published to signify the end of xml
testing in tempest we need to bump the working version to tempest-4
to indicate that the next tag will be 4.

Change-Id: I1fd12cb3e20692c60daa4eb19c6d876b00318d56