Add TEST_MAPPING for pre-submit tests

Run SELinuxHostTest whenever a change is made.

Filtering the tests to the ones that check that priv-apps are running in
their own domains.

Bug: 143172058
Test: Running "atest" in system/sepolicy runs SELinuxHostTest
Change-Id: If17642400129e97eb3bf2f631e784f92826adb9a

Author: Ashwini Oruganti

TEST_MAPPING

@@ -0,0 +1,19 @@
+{
+    "presubmit": [
+        {
+            "name": "CtsSecurityHostTestCases",
+            "options": [
+                {
+                    "include-filter": "android.security.cts.SELinuxHostTest#testPermissionControllerDomain"
+                },
+                {
+                    "include-filter": "android.security.cts.SELinuxHostTest#testVzwOmaTriggerDomain"
+                },
+                {
+                    "include-filter": "android.security.cts.SELinuxHostTest#testGMSCoreDomain"
+                }
+
+            ]
+        }
+    ]
+}