Update TEST_MAPPING for VPN tests

Vpn tests are moved to FrameworksVpnTests, so the TEST_MAPPING
should be also updated.

Test: m
Change-Id: I9da0a93761dacf74c1a77862425fcf34d8cce877

services/core/java/com/android/server/TEST_MAPPING

@@ -163,6 +163,9 @@
                 }
             ],
             "file_patterns": ["PinnerService\\.java"]
+        },
+        {
+            "name": "FrameworksVpnTests"
         }
     ]
 }

services/core/java/com/android/server/connectivity/TEST_MAPPING

@@ -7,7 +7,7 @@
                   "exclude-annotation": "com.android.testutils.SkipPresubmit"
               }
           ],
-          "file_patterns": ["Vpn\\.java", "VpnIkeV2Utils\\.java", "VpnProfileStore\\.java"]
+          "file_patterns": ["VpnIkeV2Utils\\.java", "VpnProfileStore\\.java"]
       }
   ],
   "presubmit-large": [
@@ -26,5 +26,10 @@
           ],
         "file_patterns": ["Vpn\\.java", "VpnIkeV2Utils\\.java", "VpnProfileStore\\.java"]
       }
+  ],
+  "postsubmit":[
+    {
+      "name":"FrameworksVpnTests"
+    }
   ]
 }
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