use centos SIG storage repo

Signed-off-by: Huamin Chen <[email protected]>

Author: rootfs

images/base/Dockerfile.centos7

@@ -5,9 +5,7 @@
 # The standard name for this image is openshift/origin-base
 #
 FROM openshift/origin-source
-ENV CEPH_VERSION "luminous"
-RUN rpm -Uvh https://download.ceph.com/rpm-$CEPH_VERSION/el7/noarch/ceph-release-1-1.el7.noarch.rpm && \
-    yum install epel-release -y
+RUN yum install centos-release-ceph -y
 RUN INSTALL_PKGS="bsdtar ceph-common device-mapper device-mapper-persistent-data e2fsprogs ethtool findutils git hostname iptables lsof nmap-ncat socat sysvinit-tools tar tree util-linux wget which xfsprogs" && \
     yum --disablerepo=origin-local-release install -y ${INSTALL_PKGS} && \
     rpm -V ${INSTALL_PKGS} && \