Limit GtsMediaTestCases presubmit to drm/crypto updates

Bug: 234785843
Change-Id: If7ef4fdda1e39c550e0f1ce0dfbdfa1e1b21e6ee
Test: atest frameworks/base/media
diff --git a/media/TEST_MAPPING b/media/TEST_MAPPING
index 4385a80..4ec4767 100644
--- a/media/TEST_MAPPING
+++ b/media/TEST_MAPPING
@@ -20,7 +20,8 @@
         {
           "include-filter": "com.google.android.media.gts.WidevineH264PlaybackTests"
         }
-      ]
+      ],
+      "file_patterns": ["(?i)drm|crypto"]
     }
   ],
   "imports": [