Redo unit tests helpers for CBT chain setup and verification
Redo unit tests helpers for CBT chain setup and verification

Signed-off-by: Chandrika Srinivasan <51ae5eeda27fe08017d2d63c87755f0707891830@citrix.com>

chandrikas/sm,chandrikas/sm,xapi-project/sm,xapi-project/sm,xapi-project/sm,chandrikas/sm