RDKBACCL-992 : Manage manifest with feature branch

Reason for change: Add feature branch for guthub repos

Risks: Low
Test Procedure: Follow build steps to setup build dir
Priority: P1

Change-Id: I3028f5c53a2a67b6fe781e56c60e21021a14fb80
Signed-off-by: <sipra_samantaray2@comcast.com>