transcoding: Add CtsMediaTranscodingTestCases to media and transcoding
presubmit.

Bug: 184903653
Test: None as adding presubmit.
Change-Id: Ia7e6fc32bcfccba22654df8181d64fd668077fc2
diff --git a/media/libmediatranscoding/TEST_MAPPING b/media/libmediatranscoding/TEST_MAPPING
index f8a9db9..40f7b21 100644
--- a/media/libmediatranscoding/TEST_MAPPING
+++ b/media/libmediatranscoding/TEST_MAPPING
@@ -26,6 +26,9 @@
         },
         {
             "name": "VideoTrackTranscoderTests"
+        },
+        {
+            "name": "CtsMediaTranscodingTestCases"
         }
     ]
 }