copy description when respawn
copy description when respawn

Change-Id: I476c8581dca05cf6c127b277bd56fbd774507870

SripriyaSeetharam/tacker,openstack/tacker,zeinsteinz/tacker,priya-pp/Tacker,priya-pp/Tacker,stackforge/tacker,stackforge/tacker,openstack/tacker,trozet/tacker,SripriyaSeetharam/tacker,trozet/tacker,zeinsteinz/tacker,openstack/tacker