Do not create heat_stack_owner role in keystone.pp

It's created in heat::keystone::auth and after [1] it's complaining of
duplicate declaration.

Also pinning gettext as version 3.3.0 is not compatible with the ruby
version in CentOS7.

[1] https://review.opendev.org/#/c/692664

Change-Id: I8d226aa2218eafc07119f88eca5be24c3514b717

packstack/puppet/modules/packstack/manifests/keystone.pp

@@ -50,7 +50,7 @@ class packstack::keystone ()
     }
 
     if hiera('CONFIG_HEAT_INSTALL') == 'y' {
-      $keystone_admin_roles = ['admin', '_member_', 'heat_stack_owner']
+      $keystone_admin_roles = ['admin', '_member_']
     } else {
       $keystone_admin_roles = ['admin']
     }

run_tests.sh

@@ -283,6 +283,7 @@ if [ "${INSTALL_FROM_SOURCE}" = true ]; then
   fi
   export PUPPETFILE_DIR=/usr/share/openstack-puppet/modules
   export GEM_HOME=/tmp/packstackgems
+  $SUDO gem install gettext -v 3.2.9 --no-ri --no-rdoc
   $SUDO gem install r10k -v 2.6.4 --no-ri --no-rdoc
   # make sure there is no puppet module pre-installed
   $SUDO rm -rf "${PUPPETFILE_DIR:?}/"*