Add reason for rApp instance deploy/undeploy failure

Reason field added to show why rApp instance deploy failed.

Issue-ID: NONRTRIC-913
Signed-off-by: aravind.est <aravindhan.a@est.tech>
Change-Id: Icb1779888bfbdea0f97a6059bba0a4c5a9ec01fb
7 files changed