Enable epel-testing repo for ansible-2.4.3 until it goes live

images/installer/Dockerfile

@@ -10,10 +10,12 @@ COPY images/installer/origin-extra-root /
 # install ansible and deps
 RUN INSTALL_PKGS="python-lxml python-dns pyOpenSSL python2-cryptography openssl java-1.8.0-openjdk-headless python2-passlib httpd-tools openssh-clients origin-clients" \
  && yum install -y --setopt=tsflags=nodocs $INSTALL_PKGS \
- && EPEL_PKGS="ansible python2-boto python2-boto3 python2-crypto google-cloud-sdk-183.0.0 which python2-pip.noarch" \
+ && EPEL_PKGS="python2-boto python2-boto3 python2-crypto google-cloud-sdk-183.0.0 which python2-pip.noarch" \
+ && EPEL_TESTING_PKGS="ansible" \
  && yum install -y epel-release \
  && yum install -y --setopt=tsflags=nodocs $EPEL_PKGS \
- && rpm -V $INSTALL_PKGS $EPEL_PKGS \
+ && yum install -y --setopt=tsflags=nodocs --enablerepo=epel-testing $EPEL_TESTING_PKGS \
+ && rpm -V $INSTALL_PKGS $EPEL_PKGS $EPEL_TESTING_PKGS \
  && pip install apache-libcloud~=2.2.1 \
  && yum clean all