Adding GET and DELETE for containers quickstart guide
Adding GET and DELETE for containers quickstart guide

Change-Id: I07c867140a8896253f1a4e2950a66ef4cdd02956

cneill/barbican,cloudkeep/barbican,openstack/barbican,cloudkeep/barbican,openstack/barbican,MCDong/barbican,cneill/barbican,MCDong/barbican