Fix gate: Tempest setup and repositories

- We no longer need to setup Tempest in a virtual environment
  since that is now handled by tox
- Do not explicitely require python-openstackclient since that
  is now handled by puppet-tempest since
  https://review.openstack.org/301162
- Setup packstack to consume Mitaka repositories and OPM until
  Newton is actively tested
- Make swap configuration consistent
- Add an empty other-requirements.txt file to prevent the
  openstack gate environment to pre-install dependencies for
  us; these are installed within run_tests.sh
- Enforce locale, seems necessary since the switch to the new
  centos7 images in the openstack-infra gate

Co-Authored-By: David Moreau Simard <dms@redhat.com>
Co-Authored-By: Javier Peña <jpena@redhat.com>
Change-Id: I80813ee9404a3cbc837d0d9810855fb13c0d904b
(cherry picked from commit 5b2648aec3)

packstack/puppet/templates/provision_tempest.pp

@@ -51,7 +51,6 @@ $tempest_repo_uri      = hiera('CONFIG_PROVISION_TEMPEST_REPO_URI')
 $tempest_repo_revision = hiera('CONFIG_PROVISION_TEMPEST_REPO_REVISION')
 $tempest_clone_path    = '/var/lib/tempest'
 $tempest_clone_owner   = 'root'
-$setup_venv            = true
 $tempest_user          = hiera('CONFIG_PROVISION_TEMPEST_USER')
 $tempest_password      = hiera('CONFIG_PROVISION_TEMPEST_USER_PW')
 
@@ -69,11 +68,6 @@ $heat_available       = str2bool(hiera('CONFIG_HEAT_INSTALL'))
 $swift_available      = str2bool(hiera('CONFIG_SWIFT_INSTALL'))
 $configure_tempest    = str2bool(hiera('CONFIG_PROVISION_TEMPEST'))
 
-# on standalone install we depend on this package
-package {'python-openstackclient':
-  before => Class['::tempest'],
-}
-
 class { '::tempest':
   admin_domain_name         => $admin_domain_name,
   admin_password            => $admin_password,
@@ -105,7 +99,6 @@ class { '::tempest':
   public_router_id          => $public_router_id,
   resize_available          => $resize_available,
   sahara_available          => $sahara_available,
-  setup_venv                => $setup_venv,
   swift_available           => $swift_available,
   tempest_clone_owner       => $tempest_clone_owner,
   tempest_clone_path        => $tempest_clone_path,