Move ConnectivityCoverageTests to mainline-presubmit

Recent runs have been passing in mainline-postsubmit.

Non-mainline presubmit will be added later, after it has been passing
consistently for some time.

Bug: 187935317
Change-Id: I20e3d6f11458f00ff75f32419b964c97635995b1
Test: TH needs to test
diff --git a/TEST_MAPPING b/TEST_MAPPING
index 0ce43cc..2bc573a 100644
--- a/TEST_MAPPING
+++ b/TEST_MAPPING
@@ -32,6 +32,9 @@
           "exclude-annotation": "com.android.testutils.SkipPresubmit"
         }
       ]
+    },
+    {
+      "name": "ConnectivityCoverageTests[CaptivePortalLoginGoogle.apk+NetworkStackGoogle.apk+com.google.android.resolv.apex+com.google.android.tethering.apex]"
     }
   ],
   "mainline-postsubmit": [
@@ -42,9 +45,6 @@
     },
     {
       "name": "TetheringCoverageTests[CaptivePortalLoginGoogle.apk+NetworkStackGoogle.apk+com.google.android.resolv.apex+com.google.android.tethering.apex]"
-    },
-    {
-      "name": "ConnectivityCoverageTests[CaptivePortalLoginGoogle.apk+NetworkStackGoogle.apk+com.google.android.resolv.apex+com.google.android.tethering.apex]"
     }
   ],
   "imports": [