repos/redhat: install yum-plugin-priorities

yum-plugin-priorities package is needed when running RDO trunk
packaging, repositories have priorities and we need to address them.

Change-Id: I3ac207f744847b5742fc331d2c16d1dad475f9ea

manifests/repo/redhat/redhat.pp

@@ -76,6 +76,10 @@ class openstack_extras::repo::redhat::redhat(
 
   anchor { 'openstack_extras_redhat': }
 
+  package { 'yum-plugin-priorities':
+      ensure => 'present',
+  }
+
   if $manage_rdo {
     $release_cap = capitalize($release)
 

spec/classes/openstack_extras_repo_redhat_redhat_spec.rb

@@ -61,6 +61,10 @@ describe 'openstack_extras::repo::redhat::redhat' do
         :notify     => "Exec[yum_refresh]"
       )}
 
+      it { is_expected.to contain_package('yum-plugin-priorities').with(
+        :ensure => 'present',
+      )}
+
       # 'metalink' property is supported from Puppet 3.5
       if Puppet.version.to_f >= 3.5
         it { is_expected.to contain_yumrepo('epel').with(