Get pause and unpause working
Get pause and unpause working

All other methods take in a parameter that can be either a dict with
container information or a string id. pause/unpause should be the
same. Also we have pause/unpause here explicitly is because they
are missing from some versions of the docker-py client.

Change-Id: I882326b718f1252c757fe13f0de3844e02cc9d08

hongbin/magnum,hongbin/magnum,ChengTiesheng/magnum,jay-lau/magnum,annegentle/magnum,ArchiFleKs/magnum,ramielrowe/magnum,LaynePeng/magnum,Tennyson53/magnum,eshijia/SUR,openstack/magnum,mjbrewer/testindex,dimtruck/magnum,Alzon/SUR,sajuptpm/magnum,eshijia/magnum,dimtruck/magnum,paulczar/magnum,sajuptpm/magnum,ffantast/magnum,annegentle/magnum,ArchiFleKs/magnum,LaynePeng/magnum,ffantast/magnum,openstack/magnum,Tennyson53/SUR,Alzon/SUR,mjbrewer/testindex,ddepaoli3/magnum,paulczar/magnum,eshijia/magnum,Tennyson53/SUR,eshijia/SUR,ChengTiesheng/magnum,Tennyson53/magnum,ramielrowe/magnum,ddepaoli3/magnum,mjbrewer/testindex