Marking tests to be run in sanity.

From policy inheritance marking the following tests
as sanity test cases:
1. test_policy_inheritance_src_vn_dst_pol
2. test_policy_inheritance_src_pol_dst_any
3. test_policy_cidr_src_vn_dst_cidr
4. test_policy_cidr_src_cidr_dst_any

Change-Id: I4c67ae1ba4942d61defc630126f85910516a8745
Merge "Marking tests to be run in sanity."