Specify exposed capabilities for VCN gateway connection errors.

This CL updates VCN error callbacks to return the exposed capabilities
for a gateway connection for identification purposes. Previously, the
required underlying capabilities were returned (which are not meaningful
to the caller for identification purposes).

Bug: 182281888
Test: atest FrameworksVcnTests
Change-Id: Ic62bd0b524f24f2577d9abc7635112a6419d35ed

services/core/java/com/android/server/vcn/VcnGatewayConnection.java

@@ -979,7 +979,7 @@ public class VcnGatewayConnection extends StateMachine {
         // IkeSessionCallback.onClosedExceptionally(), which calls sessionClosed()
         if (exception != null) {
             mGatewayStatusCallback.onGatewayConnectionError(
-                    mConnectionConfig.getRequiredUnderlyingCapabilities(),
+                    mConnectionConfig.getExposedCapabilities(),
                     VCN_ERROR_CODE_INTERNAL_ERROR,
                     RuntimeException.class.getName(),
                     "Received "
@@ -1016,7 +1016,7 @@ public class VcnGatewayConnection extends StateMachine {
         }
 
         mGatewayStatusCallback.onGatewayConnectionError(
-                mConnectionConfig.getRequiredUnderlyingCapabilities(),
+                mConnectionConfig.getExposedCapabilities(),
                 errorCode,
                 exceptionClass,
                 exceptionMessage);

tests/vcn/java/com/android/server/vcn/VcnGatewayConnectionConnectedStateTest.java

@@ -241,7 +241,7 @@ public class VcnGatewayConnectionConnectedStateTest extends VcnGatewayConnection
 
         verify(mGatewayStatusCallback)
                 .onGatewayConnectionError(
-                        eq(mConfig.getRequiredUnderlyingCapabilities()),
+                        eq(mConfig.getExposedCapabilities()),
                         eq(VCN_ERROR_CODE_INTERNAL_ERROR),
                         any(),
                         any());
@@ -275,10 +275,7 @@ public class VcnGatewayConnectionConnectedStateTest extends VcnGatewayConnection
 
         verify(mGatewayStatusCallback)
                 .onGatewayConnectionError(
-                        eq(mConfig.getRequiredUnderlyingCapabilities()),
-                        eq(expectedErrorType),
-                        any(),
-                        any());
+                        eq(mConfig.getExposedCapabilities()), eq(expectedErrorType), any(), any());
     }
 
     @Test