Minor - allow changing status description of deleting cluster
Minor - allow changing status description of deleting cluster

We should allow changing status description of deleting
cluster, because in case of possible issues during deletion
we would not have ability to see reasons of issues from UI.

Change-Id: I8425ceb59460dfd719aac59acd022fc8bf9852f7
Closes-bug: #1438232
egafford/sahara,bigfootproject/sahara,crobby/sahara,egafford/sahara,esikachev/sahara-backup,henaras/sahara,matips/iosr-2015,zhujzhuo/Sahara,zhujzhuo/Sahara,openstack/sahara,zhujzhuo/Sahara,matips/iosr-2015,henaras/sahara,crobby/sahara,redhat-openstack/sahara,bigfootproject/sahara,redhat-openstack/sahara,ekasitk/sahara,henaras/sahara,tellesnobrega/sahara,zhangjunli177/sahara,tellesnobrega/sahara,zhangjunli177/sahara,zhangjunli177/sahara,ekasitk/sahara,ekasitk/sahara,matips/iosr-2015,esikachev/sahara-backup,crobby/sahara,bigfootproject/sahara,redhat-openstack/sahara,openstack/sahara,esikachev/sahara-backup