Remove priority for non-delorean RDO repos

RDO doesn't set priority in repository configuration via
rdo-release or centos openstack releases rpms.

This is currently being a problem as dependencies for qemu-kvm-ev-2.6.0
must be resolved from base and RDO ships same packages with lower VR
for historical reasons.

Change-Id: Ifb0ec9ca8a98a15984145972e99915e7eb23eb99

manifests/repo/redhat/params.pp

@@ -33,6 +33,4 @@ class openstack_extras::repo::redhat::params
       warning('Unrecognised operatingsystem')
     }
   }
-
-  $rdo_priority = 98
 }

manifests/repo/redhat/redhat.pp

@@ -102,7 +102,6 @@ class openstack_extras::repo::redhat::redhat(
       'rdo-release' => {
         'baseurl'  => "${centos_mirror_url}/centos/7/cloud/\$basearch/openstack-${release}/",
         'descr'    => "OpenStack ${release_cap} Repository",
-        'priority' => $::openstack_extras::repo::redhat::params::rdo_priority,
         'gpgkey'   => 'file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-SIG-Cloud',
       }
     }

spec/classes/openstack_extras_repo_redhat_redhat_spec.rb

@@ -52,7 +52,6 @@ describe 'openstack_extras::repo::redhat::redhat' do
       it { is_expected.to contain_yumrepo('rdo-release').with(
         :baseurl    => "http://mirror.centos.org/centos/7/cloud/$basearch/openstack-newton/",
         :descr      => "OpenStack Newton Repository",
-        :priority   => 98,
         :gpgkey     => "file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-SIG-Cloud",
         :enabled    => '1',
         :gpgcheck   => '1',