Description of problem:
If  the openshift_master_portal_net is inventory file,  those values expected for '--selinux-enabled ' will be deleted in OPTIONS in  /etc/sysconfig/docker on master after upgrade.


Version-Release number of selected component (if applicable):
atomic-openshift-utils-3.0.94-1.git.0.67a822a.el7.noarch
atomic-openshift-utils-3.2.1-1.git.0.b8d1b5e.el7

How reproducible:
always

Steps to Reproduce:
1) Enable osm_cluster_network_cidr="10.2.0.0/16" and  penshift_master_portal_net="172.31.0.0/16"
   install OSE 3.0.2.0  by atomic-openshift-utils-3.0.35-1.git.0.6a386dd.el7aos.noarch

2) check the docker configuration file on master
   grep OPTIONS /etc/sysconfig/docker

3) upgrade to OSE 3.1 
    ansible-playbook -i config/hosts  /usr/share/ansible/openshift-ansible/playbooks/byo/openshift-cluster/upgrades/v3_0_to_v3_1/upgrade.yml  -vvv|tee upgradev30tov31.logs2.logs
##Note:  upgrade to docker 1.10 before run upgrade playbook if you are using atomic-openshift-utils-3.2.1

4) check the docker configuration file on master 
   grep OPTIONS /etc/sysconfig/docker

Actual results:

2)#grep OPTIONS /etc/sysconfig/docker
OPTIONS=' --selinux-enabled --insecure-registry=172.31.0.0/16 '

4)#grep OPTIONS /etc/sysconfig/docker
OPTIONS=' --selinux-enabled'

Expected results:
--insecure-registry should be added to OPTIONS

Additional info: