Add rollbackPackageHealthObserverTest to presubmit

It first needs the test to be in postsubmit to run SLO chacks. Once that
passes we can add it to presubmit in a later CL.

Test: config change
Bug: 291137901
Change-Id: Ie5f9d404a84c4a16e791cac5fc0a6b867561a67f
diff --git a/services/tests/mockingservicestests/src/com/android/server/rollback/TEST_MAPPING b/services/tests/mockingservicestests/src/com/android/server/rollback/TEST_MAPPING
new file mode 100644
index 0000000..e42bdad
--- /dev/null
+++ b/services/tests/mockingservicestests/src/com/android/server/rollback/TEST_MAPPING
@@ -0,0 +1,12 @@
+{
+  "postsubmit": [
+    {
+      "name": "FrameworksMockingServicesTests",
+      "options": [
+        {
+          "include-filter": "com.android.server.rollback"
+        }
+      ]
+    }
+  ]
+}
\ No newline at end of file