Fix TestCreateVM_Isolated stability by creating fresh ctx/fcClient per subtest

Signed-off-by: Arjun Raja Yogidas <arjunry@amazon.com>

Author: coderbirju

.buildkite/pipeline.yml

@@ -75,7 +75,7 @@ steps:
     artifact_paths:
       - "runtime/logs/*"
     command:
-      - make -C runtime integ-test FICD_DM_POOL=build_${BUILDKITE_BUILD_NUMBER}_runtime
+      - make -C runtime integ-test-TestCreateVM_Isolated FICD_DM_POOL=build_${BUILDKITE_BUILD_NUMBER}_runtime
     retry:
       automatic:
         - exit_status: "*"

runtime/service_integ_test.go

@@ -2250,11 +2250,6 @@ func TestCreateVM_Isolated(t *testing.T) {
 	require.NoError(t, err, "unable to create client to containerd service at %s, is containerd running?", integtest.ContainerdSockPath)
 	defer client.Close()
 
-	ctx := namespaces.WithNamespace(context.Background(), "default")
-
-	fcClient, err := integtest.NewFCControlClient(integtest.ContainerdSockPath)
-	require.NoError(t, err, "failed to create ttrpc client")
-
 	kernelArgs := integtest.DefaultRuntimeConfig.KernelArgs
 
 	type subtest struct {
@@ -2331,6 +2326,15 @@ func TestCreateVM_Isolated(t *testing.T) {
 		if !s.validateUsesFindProcess {
 			t.Parallel()
 		}
+
+		ctx, cancel := context.WithTimeout(context.Background(), 60*time.Second)
+		defer cancel()
+		ctx = namespaces.WithNamespace(ctx, "default")
+
+		fcClient, err := integtest.NewFCControlClient(integtest.ContainerdSockPath)
+		require.NoError(t, err, "failed to create ttrpc client")
+		defer fcClient.Close()
+
 		vmID := testNameToVMID(t.Name())
 
 		tempDir := t.TempDir()
@@ -2360,6 +2364,8 @@ func TestCreateVM_Isolated(t *testing.T) {
 				TimeoutSeconds: 30,
 			})
 			require.Equal(t, status.Code(err), codes.OK)
+
+			time.Sleep(500 * time.Millisecond)
 		}
 	}