tests: add CVM test for pci_bar_reprogramming

Add a CVM integration test for pci_bar_reprogramming that
validates the same functionality using a confidential guest
with the basic_cvm_guest macro.

Signed-off-by: Muminul Islam <muislam@microsoft.com>

cloud-hypervisor/tests/integration_cvm.rs

@@ -248,4 +248,10 @@ mod common_cvm {
         let guest = basic_cvm_guest!(JAMMY_IMAGE_NAME);
         _test_direct_kernel_boot_noacpi(&guest);
     }
+
+    #[test]
+    fn test_pci_bar_reprogramming() {
+        let guest = basic_cvm_guest!(JAMMY_IMAGE_NAME);
+        _test_pci_bar_reprogramming(&guest);
+    }
 }