Add container property.

Bug: 330354107
Test: CI

Change-Id: I508c4ef2db631b723f85269527367e0adc0fb14e
diff --git a/AconfigFlags.bp b/AconfigFlags.bp
index d98e191..c579870 100644
--- a/AconfigFlags.bp
+++ b/AconfigFlags.bp
@@ -585,6 +585,7 @@
 aconfig_declarations {
     name: "com.android.media.flags.performance-aconfig",
     package: "com.android.media.performance.flags",
+    container: "system",
     srcs: [
         "media/java/android/media/flags/performance.aconfig",
     ],
diff --git a/media/java/android/media/flags/performance.aconfig b/media/java/android/media/flags/performance.aconfig
index 9e9197e..464efea 100644
--- a/media/java/android/media/flags/performance.aconfig
+++ b/media/java/android/media/flags/performance.aconfig
@@ -1,4 +1,5 @@
 package: "com.android.media.performance.flags"
+container: "system"
 
 flag {
     name: "media_description_ashmem_bitmap"
diff --git a/services/core/java/com/android/server/connectivity/Android.bp b/services/core/java/com/android/server/connectivity/Android.bp
index a374ec2..0916594 100644
--- a/services/core/java/com/android/server/connectivity/Android.bp
+++ b/services/core/java/com/android/server/connectivity/Android.bp
@@ -1,6 +1,7 @@
 aconfig_declarations {
     name: "connectivity_flags",
     package: "com.android.server.connectivity",
+    container: "system",
     srcs: ["flags.aconfig"],
 }
 
diff --git a/services/core/java/com/android/server/connectivity/flags.aconfig b/services/core/java/com/android/server/connectivity/flags.aconfig
index 32593d4..8fd3ce5 100644
--- a/services/core/java/com/android/server/connectivity/flags.aconfig
+++ b/services/core/java/com/android/server/connectivity/flags.aconfig
@@ -1,8 +1,9 @@
 package: "com.android.server.connectivity"
+container: "system"
 
 flag {
     name: "replace_vpn_profile_store"
     namespace: "android_core_networking"
     description: "This flag controls the usage of VpnBlobStore to replace LegacyVpnProfileStore."
     bug: "307903113"
-}
\ No newline at end of file
+}