virtcontainers: GetOOMEvent should have no timeout

So that waiter gets notified when oom happens.

Signed-off-by: bin liu <liubin0329@gmail.com>

src/runtime/virtcontainers/kata_agent.go

@@ -2094,8 +2094,8 @@ func (k *kataAgent) installReqFunc(c *kataclient.AgentClient) {
 func (k *kataAgent) getReqContext(reqName string) (ctx context.Context, cancel context.CancelFunc) {
 	ctx = context.Background()
 	switch reqName {
-	case grpcWaitProcessRequest:
-		// Wait has no timeout
+	case grpcWaitProcessRequest, grpcGetOOMEventRequest:
+		// Wait and GetOOMEvent have no timeout
 	case grpcCheckRequest:
 		ctx, cancel = context.WithTimeout(ctx, checkRequestTimeout)
 	default: