Fix failure to respond when SRM says Access Denied.

Fix failure to respond when SRM says Access Denied.

The enum types for forbidden request and unauthorized request in
CAResponseResult_t added as part of security where misisng in a sanity
check switch case. This caused the forbidden and unauthorized response
codes to be classified as invalid.

Change-Id: Idc53a50422e3d5e43a847395a2389da351ea6baf
Signed-off-by: Mandeep Shetty <mandeep.shetty@intel.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/1610
Reviewed-by: Erich Keane <erich.keane@intel.com>
Reviewed-by: Sachin Agrawal <sachin.agrawal@intel.com>
Tested-by: Sachin Agrawal <sachin.agrawal@intel.com>