Reference framework-connectivity stubs explicitly

To merge the framework-connectivity and framework-connectivity.impl
targets, framework-connectivity stubs need to be referenced explicitly
in java_sdk_libraries, otherwise the build system will currently see
dependency cycles.

Bug: 183600168
Test: m
Ignore-AOSP-First: Needs manual cherry-picks
Change-Id: I556747f9ba934f8b44b6ea9a518adbccc84ac2a9

Tethering/common/TetheringLib/Android.bp

@@ -26,8 +26,8 @@ java_sdk_library {
     ],
 
     srcs: [":framework-tethering-srcs"],
-    libs: ["framework-connectivity"],
+    libs: ["framework-connectivity.stubs.module_lib"],
-    stub_only_libs: ["framework-connectivity"],
+    stub_only_libs: ["framework-connectivity.stubs.module_lib"],
     aidl: {
         include_dirs: [
             "frameworks/base/packages/Connectivity/framework/aidl-export",