Fixes issues with tempest

The tempest role has an entry within the defaults of the role and
it could cause confusion when dealing with tempest as the main
package version is being specified in
`vars/repo_packages/openstack_services.yml`. Being that these
variables are no longer used they have been removed.

Implements blueprint: master-kilofication

Change-Id: I197afac1ce50d9bad778dda5cc4a23a0821fceeb

playbooks/roles/os_tempest/defaults/main.yml

@@ -60,15 +60,14 @@ tempest_swift_object_versioning: True
 
 tempest_volume_backup_enabled: False
 
-tempest_git_repo: https://github.com/openstack/tempest
-tempest_git_install_branch: master
-tempest_git_dest: "/opt/tempest_{{ tempest_git_install_branch | replace('/', '_') }}"
-
 tempest_main_group: tempest_all
 
+# fixtures, testscenarios, pbr locked due to issue https://bugs.launchpad.net/openstack-ansible/+bug/1450733
 tempest_pip_packages:
+  - "fixtures<1.1.0"
   - nose
   - oslo.serialization
+  - "pbr>=0.6,!=0.7,<0.11.0"
   - python-barbicanclient
   - python-ceilometerclient
   - python-cinderclient
@@ -89,6 +88,7 @@ tempest_pip_packages:
   - python-tuskarclient
   - python-memcached
   - testrepository
+  - "testscenarios<=0.4"
   - testtools
 
 tempest_image_dir: "/opt/images"