[fixes #39319053] - deployment/instance now notices a job rename as a 'change'.   Also removed unnecessary catch and throw on exception in the bat/bosh_helper. Added bat test to cover job renames.

Change-Id: Idc3e157a8037cb2d435950ea04071f5da370529d
Merge "[fixes #39319053] - deployment/instance now notices a job rename as a 'change'.   Also removed unnecessary catch and throw on exception in the bat/bosh_helper. Added bat test to cover job renames."