chore: add test for gvisor extension with platform kvm

Add test for Gvisor extensions when kvm platform is used.

The test is marked as skipped until pod termination issue is resolved.

Signed-off-by: Noel Georgi <git@frezbo.dev>

internal/integration/api/extensions_qemu.go

@@ -362,10 +362,18 @@ func (suite *ExtensionsSuiteQEMU) TestExtensionsHelloWorldService() {
 }
 
 // TestExtensionsGvisor verifies gvisor runtime class is working.
-// TODO: frezbo: re-enable once https://github.com/siderolabs/extensions/issues/417 is addressed.
-// func (suite *ExtensionsSuiteQEMU) TestExtensionsGvisor() {
-// 	suite.testRuntimeClass("gvisor", "runsc")
-// }
+func (suite *ExtensionsSuiteQEMU) TestExtensionsGvisor() {
+	suite.T().Skip("skipping until https://github.com/siderolabs/extensions/issues/417 is addressed.")
+
+	suite.testRuntimeClass("gvisor", "runsc")
+}
+
+// TestExtensionsGvisorKVM verifies gvisor runtime class with kvm platform is working.
+func (suite *ExtensionsSuiteQEMU) TestExtensionsGvisorKVM() {
+	suite.T().Skip("skipping until https://github.com/siderolabs/extensions/issues/417 is addressed.")
+
+	suite.testRuntimeClass("gvisor-kvm", "runsc-kvm")
+}
 
 // TestExtensionsKataContainers verifies gvisor runtime class is working.
 func (suite *ExtensionsSuiteQEMU) TestExtensionsKataContainers() {