Description of problem:

Upgrades from 3.1 to 3.2 or 3.2 to 3.3 will update docker to latest version available which is 1.12 currently. 1.12 is not supported on any of these versions. 



Version-Release number of selected component (if applicable):
3.1 
3.2 
3.3

How reproducible:
100%

Steps to Reproduce:
1. Run upgrade playbook from a 3.1 or 3.2 environment. 
2. Do not set docker_version in the hosts file  

Actual results:
Docker gets updated to 1.12


Expected results:
Docker gets updated to 1.10 (supported docker version) 




Additional info:

We only check for if docker version is >= 1.10

We set "docker_version" to the latest version found in the repos. 

https://github.com/openshift/openshift-ansible/blob/release-1.2/playbooks/common/openshift-cluster/upgrades/docker/upgrade_check.yml#L21-L28
https://github.com/openshift/openshift-ansible/blob/release-1.2/playbooks/common/openshift-cluster/upgrades/docker/upgrade_check.yml#L40-L42


We make sure that the excluder package is disabled so there is no exclude in the yum.conf. even with the exclude package enabled we would hit the issue because of bug : https://bugzilla.redhat.com/show_bug.cgi?id=1417723