bump RDO and unpin tempest

https://review.openstack.org/321100 has been merged, we should be able
to deploy Tempest on master.

This patch bumps RDO repo to have the latest commit in Ceilometer and
also unpin Tempest.

Change-Id: I430518c4336a5eb4cd0caedb1eb637783303e1d3

manifests/repos.pp

@@ -21,7 +21,7 @@ class openstack_integration::repos {
         manage_epel => false,
         repo_hash   => {
           'newton-current'       => {
-            'baseurl'  => 'https://trunk.rdoproject.org/centos7-master/b5/75/b5751c2d433224227dedffad25094535138f18da_56c5cddd/',
+            'baseurl'  => 'https://trunk.rdoproject.org/centos7-master/12/4a/124abf1278262345ecbde6df12630fbb7ffbf712_2382d3c4/',
             'descr'    => 'Newton current',
             'gpgcheck' => 'no',
             'priority' => 1,

run_tests.sh

@@ -198,11 +198,6 @@ TESTS="${TESTS} TestManageQueue"
 
 print_header 'Running Tempest'
 cd /tmp/openstack/tempest
-
-# https://review.openstack.org/#/c/297511/ broke our gate
-# we pin Tempest until we sort this out.
-git checkout a3c7945a5fff6be018de7a56a3faa59acc29f6bc
-
 tox -eall-plugin -- --concurrency=2 $TESTS
 RESULT=$?
 set -e