tests: Add CVM HTTP API shutdown and delete tests

Add test_api_http_shutdown and test_api_http_delete to the
common_cvm module using GuestFactory with 4 CPUs. Both tests
reuse existing _test_api_shutdown and _test_api_delete helpers
to extend API coverage to confidential VMs.

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

cloud-hypervisor/tests/integration.rs

@@ -14570,4 +14570,26 @@ mod common_cvm {
         let target_api = TargetApi::new_http_api(&guest.tmp_dir);
         _test_api_create_boot(&target_api, &guest);
     }
+
+    #[test]
+    fn test_api_http_shutdown() {
+        let disk_config = UbuntuDiskConfig::new(JAMMY_IMAGE_NAME.to_string());
+        let guest = GuestFactory::new_confidential_guest_factory()
+            .create_guest(Box::new(disk_config))
+            .with_cpu(4);
+
+        let target_api = TargetApi::new_http_api(&guest.tmp_dir);
+        _test_api_shutdown(&target_api, &guest);
+    }
+
+    #[test]
+    fn test_api_http_delete() {
+        let disk_config = UbuntuDiskConfig::new(JAMMY_IMAGE_NAME.to_string());
+        let guest = GuestFactory::new_confidential_guest_factory()
+            .create_guest(Box::new(disk_config))
+            .with_cpu(4);
+
+        let target_api = TargetApi::new_http_api(&guest.tmp_dir);
+        _test_api_delete(&target_api, &guest);
+    }
 }