Fix Oraclelinux build, disable collectd in gate

Oraclelinux repositories has been upgraded and
previous file removed, this change update repos
to new URLs.

Disable collectd in gate as is currently broken and
blocks mergingin voting jobs.

Change-Id: I402cff1ac86a2ba108f2f5378cc98db5f6ecc673
(cherry picked from commit 65296e27e6)

docker/base/Dockerfile.j2

@@ -198,10 +198,10 @@ RUN yum -y install \
     && rpm -Uvh --nodeps \
         http://mirror.centos.org/centos-7/7/extras/x86_64/Packages/centos-release-openstack-pike-1-1.el7.x86_64.rpm \
         http://mirror.centos.org/centos-7/7/extras/x86_64/Packages/centos-release-ceph-jewel-1.0-1.el7.centos.noarch.rpm \
-        http://mirror.centos.org/centos-7/7/extras/x86_64/Packages/centos-release-opstools-1-7.el7.centos.noarch.rpm \
-        http://mirror.centos.org/centos-7/7/extras/x86_64/Packages/centos-release-qemu-ev-1.0-2.el7.noarch.rpm \
+        http://mirror.centos.org/centos-7/7/extras/x86_64/Packages/centos-release-opstools-1-8.el7.noarch.rpm \
+        http://mirror.centos.org/centos-7/7/extras/x86_64/Packages/centos-release-qemu-ev-1.0-3.el7.centos.noarch.rpm \
         http://mirror.centos.org/centos-7/7/extras/x86_64/Packages/centos-release-virt-common-1-1.el7.centos.noarch.rpm \
-        http://mirror.centos.org/centos-7/7/extras/x86_64/Packages/centos-release-storage-common-1-2.el7.centos.noarch.rpm \
+        http://mirror.centos.org/centos-7/7/extras/x86_64/Packages/centos-release-storage-common-2-2.el7.centos.noarch.rpm \
     && sed -i 's/\$releasever/7/g' /etc/yum.repos.d/CentOS-*.repo \
     && rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-7 \
     && rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-SIG-OpsTools \

tests/playbooks/pre.yml

@@ -1,6 +1,5 @@
 - hosts: all
   become: true
-
   tasks:
     - name: Install dbus for debian system
       apt: name=dbus