com.android.tethering: set min_sdk_version 30

Tethering is updatable apex module that was launched in R, hence it and
all it dependencies should specify min_sdk_version <= 30.

Test: m
Bug: 171668006
Bug: 171330443
Change-Id: Ic91cf96dda6419d1038b0329b920f9cd24482aef
Merged-In: Ic91cf96dda6419d1038b0329b920f9cd24482aef
(cherry picked from commit bee20e84)

Tethering/Android.bp

@@ -17,6 +17,7 @@
 java_defaults {
     name: "TetheringAndroidLibraryDefaults",
     sdk_version: "module_current",
+    min_sdk_version: "30",
     srcs: [
         "src/**/*.java",
         ":framework-tethering-shared-srcs",
@@ -57,7 +58,7 @@ cc_library {
         "//apex_available:platform", // Used by InProcessTethering
         "com.android.tethering",
     ],
-    min_sdk_version: "current",
+    min_sdk_version: "30",
     srcs: [
         "jni/android_net_util_TetheringUtils.cpp",
     ],
@@ -118,7 +119,7 @@ android_app {
     // InProcessTethering is a replacement for Tethering
     overrides: ["Tethering"],
     apex_available: ["com.android.tethering"],
-    min_sdk_version: "current",
+    min_sdk_version: "30",
 }
 
 // Updatable tethering packaged as an application
@@ -132,5 +133,5 @@ android_app {
     // The permission configuration *must* be included to ensure security of the device
     required: ["NetworkPermissionConfig"],
     apex_available: ["com.android.tethering"],
-    min_sdk_version: "current",
+    min_sdk_version: "30",
 }

Tethering/apex/Android.bp

@@ -17,7 +17,7 @@
 apex {
     name: "com.android.tethering",
     updatable: true,
-    min_sdk_version: "current",
+    min_sdk_version: "30",
     java_libs: ["framework-tethering"],
     apps: ["Tethering"],
     manifest: "manifest.json",

Tethering/common/TetheringLib/Android.bp

@@ -28,6 +28,7 @@ java_sdk_library {
     hostdex: true, // for hiddenapi check
     apex_available: ["com.android.tethering"],
     permitted_packages: ["android.net"],
+    min_sdk_version: "30",
 }
 
 filegroup {