Add TEST_MAPPING to MediaParser hostside tests

Bug: 158742256
Test: Manually checked presubmit queue.
Change-Id: Ibab6bfd15e8b16c10a20ce6bf5f1ae2914067f31
diff --git a/hostsidetests/mediaparser/TEST_MAPPING b/hostsidetests/mediaparser/TEST_MAPPING
new file mode 100644
index 0000000..3d21914
--- /dev/null
+++ b/hostsidetests/mediaparser/TEST_MAPPING
@@ -0,0 +1,10 @@
+{
+  "presubmit": [
+    {
+      "name": "CtsMediaParserTestCases"
+    },
+    {
+      "name": "CtsMediaParserHostTestCases"
+    }
+  ]
+}