Update TEST_MAPPING imports for connectivity

Connectivity CTS tests were moved from cts/tests/net to
packages/modules/Connectivity.

Bug: 185751610
Change-Id: Id4efd99c419706a52ad5d708888097bd6312d4e6
Test: treehugger is needed to test
diff --git a/tests/net/TEST_MAPPING b/tests/net/TEST_MAPPING
index d659688..502f885 100644
--- a/tests/net/TEST_MAPPING
+++ b/tests/net/TEST_MAPPING
@@ -28,7 +28,7 @@
   ],
   "imports": [
     {
-      "path": "cts/tests/tests/net"
+      "path": "packages/modules/Connectivity"
     }
   ]
 }
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