Update the prefix of VPN_APP_EXCLUDED in the test

Update the string according to the change in Vpn.java

Bug: 237345836
Test: atest FrameworksNetTests
Change-Id: I9bfe0a1fad29ba1435eeb8b8b2cffa9d385b1cb5
(cherry picked from commit 9460f45c047e49aff7e83ea3496476dd21752e0e)
Merged-In: I9bfe0a1fad29ba1435eeb8b8b2cffa9d385b1cb5
diff --git a/tests/unit/java/com/android/server/connectivity/VpnTest.java b/tests/unit/java/com/android/server/connectivity/VpnTest.java
index 4c0cb03..b0440d5 100644
--- a/tests/unit/java/com/android/server/connectivity/VpnTest.java
+++ b/tests/unit/java/com/android/server/connectivity/VpnTest.java
@@ -207,7 +207,7 @@
     private static final int TEST_TUNNEL_RESOURCE_ID = 0x2345;
     private static final long TEST_TIMEOUT_MS = 500L;
     private static final String PRIMARY_USER_APP_EXCLUDE_KEY =
-            "VPN_APP_EXCLUDED_27_com.testvpn.vpn";
+            "VPNAPPEXCLUDED_27_com.testvpn.vpn";
     /**
      * Names and UIDs for some fake packages. Important points:
      *  - UID is ordered increasing.