Add DISALLOW_CONFIG_LOCALE user restriction

Bug: 67586452
Test: make cts && cts-tradefed run cts-dev -m DevicePolicyManager \
-t com.android.cts.devicepolicy.UserRestrictionsTest

Change-Id: Icaf78dec5527c57c00e2b9854ba17ec1982bfac4
diff --git a/services/core/java/com/android/server/pm/UserRestrictionsUtils.java b/services/core/java/com/android/server/pm/UserRestrictionsUtils.java
index c86122f..d046853 100644
--- a/services/core/java/com/android/server/pm/UserRestrictionsUtils.java
+++ b/services/core/java/com/android/server/pm/UserRestrictionsUtils.java
@@ -66,6 +66,7 @@
 
     public static final Set<String> USER_RESTRICTIONS = newSetWithUniqueCheck(new String[] {
             UserManager.DISALLOW_CONFIG_WIFI,
+            UserManager.DISALLOW_CONFIG_LOCALE,
             UserManager.DISALLOW_MODIFY_ACCOUNTS,
             UserManager.DISALLOW_INSTALL_APPS,
             UserManager.DISALLOW_UNINSTALL_APPS,