Ability for DPM to specify fallback mechanism

Bug: 194332512
Test: unit test
Change-Id: Id4d85da8f64e7559326c4657b8833dac3ce5ce3d
diff --git a/framework/api/module-lib-current.txt b/framework/api/module-lib-current.txt
index 7a0142a..b8dfd3d 100644
--- a/framework/api/module-lib-current.txt
+++ b/framework/api/module-lib-current.txt
@@ -41,6 +41,7 @@
     field public static final int BLOCKED_REASON_RESTRICTED_MODE = 8; // 0x8
     field public static final int PROFILE_NETWORK_PREFERENCE_DEFAULT = 0; // 0x0
     field public static final int PROFILE_NETWORK_PREFERENCE_ENTERPRISE = 1; // 0x1
+    field public static final int PROFILE_NETWORK_PREFERENCE_ENTERPRISE_NO_FALLBACK = 2; // 0x2
   }
 
   public static class ConnectivityManager.NetworkCallback {