Updating Daemon Set
===================
 - Not trivial. We need to 
    a) Re-recreate ds
        * Manualy change 'imagePullPolicty' to 'Always' if it is set to 'IfNotExisting'
    b) Destory all nodes and allow ds to recreate them

 - Sample: Updateing gluster
    oc -n glusterfs delete ds/glusterfs-storage
    oc -n glusterfs process glusterfs IMAGE_NAME=chsa/gluster-centos IMAGE_VERSION=312 > gluster.json
        *** Edit
    oc -n glusterfs create -f gluster.json
    oc -n glusterfs delete pods -l 'glusterfs=storage-pod'
