added validation for CFD CSCwp64296 (datacenter#307)

Added rogue ep/coop exception mac check for the CFD CSCwp64296

Author: psureshb

docs/docs/validations.md

@@ -2867,4 +2867,4 @@ This check will verify the count of the `svccoreCtrlr` Managed Object and raise
 [66]: https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwr66848
 [67]: https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwh80837
 [68]: https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwd40071
-[69]: https://bst.cloudapps.cisco.com/bugsearch/bug/CSCws84232
+[69]: https://bst.cloudapps.cisco.com/bugsearch/bug/CSCws84232