Add service-connectivity to tethering APEX

Add the connectivity service JAR to the tethering APEX.
This change should not be released in monthly updates until the
modularization work is done, so will be reverted in module release
branches.

Test: Boot, wifi connects and has internet access
Bug: 171540887
Merged-In: Ic496cd62be8c90928ccc619519ebe517beea78f0

Change-Id: Ia7cb83834b854e8c495c4ef17ec69ad032509208
diff --git a/Tethering/apex/Android.bp b/Tethering/apex/Android.bp
index a1e7fd2..c99121c 100644
--- a/Tethering/apex/Android.bp
+++ b/Tethering/apex/Android.bp
@@ -16,9 +16,17 @@
 
 apex {
     name: "com.android.tethering",
-    updatable: true,
-    min_sdk_version: "30",
-    java_libs: ["framework-tethering"],
+    // TODO: make updatable again once this contains only updatable artifacts (in particular, this
+    // cannot build as updatable unless service-connectivity builds against stable API).
+    // updatable: true,
+    // min_sdk_version: "30",
+    java_libs: [
+        "framework-tethering",
+        "service-connectivity",
+    ],
+    jni_libs: [
+        "libservice-connectivity",
+    ],
     bpfs: ["offload.o"],
     apps: ["Tethering"],
     manifest: "manifest.json",