Add policy name as a possible source or destination of another policy
Also added a unit test case to test the feature.

Change-Id: Ibb047a95108cac2e5a3516322d91b9a1b9c9f1ea
Closes-Bug: 1341451
(cherry picked from commit e028259c0828765ba165780a552545492454ddd9)
Merge "Add policy name as a possible source or destination of another policy Also added a unit test case to test the feature." into R1.10