docker 1.9 is unstable when used with OpenShift 3.1
If docker 1.9 and atomic-openshift 3.1 / origin 1.1 are installed simultaneously, it causes stability issues. Customers should wait until atomic-openshift 3.2 / origin 1.2 are released before upgrading to docker 1.9. To ensure this, docker 1.9 has been packaged to conflict with atomic-openshift versions older than 3.2 and origin versions older than 1.2. OpenShift customers doing a "yum update" will get the docker-1.9 package *only if* they have atomic-openshift 3.2 / origin 1.2 or newer installed. Simultaneous installation of docker 1.9 with older versions of atomic-openshift or origin will not be allowed.