upstream capv bug causes session timeout

Until we can bump capv to the latest version
disable session keep alive that causes session
timeout and deadlocks as described in the links
attached to the bug.

pkg/clusterapi/system.go

@@ -276,6 +276,7 @@ func (c *system) Run(ctx context.Context) error {
 					"--webhook-port={{.WebhookPort}}",
 					"--webhook-cert-dir={{.WebhookCertDir}}",
 					"--leader-elect=false",
+					"--enable-keep-alive=false",
 				},
 				map[string]string{
 					"EXP_KUBEADM_BOOTSTRAP_FORMAT_IGNITION": "true",