make the dispute test run by itself

It's kind of slow.

.circleci/config.yml

@@ -591,6 +591,11 @@ workflows:
           go-test-flags: "-run=TestWindowedPost"
           winpost-test: "1"
           test-suite-name: window-post
+      - test-window-post:
+          codecov-upload: true
+          go-test-flags: "-run=TestWindowedDispute"
+          winpost-test: "1"
+          test-suite-name: window-post-dispute
       - test-terminate:
           codecov-upload: true
           go-test-flags: "-run=TestTerminate"

node/node_test.go

@@ -200,6 +200,9 @@ func TestPaymentChannels(t *testing.T) {
 }
 
 func TestWindowPostDispute(t *testing.T) {
+	if os.Getenv("LOTUS_TEST_WINDOW_POST") != "1" {
+		t.Skip("this takes a few minutes, set LOTUS_TEST_WINDOW_POST=1 to run")
+	}
 	logging.SetLogLevel("miner", "ERROR")
 	logging.SetLogLevel("chainstore", "ERROR")
 	logging.SetLogLevel("chain", "ERROR")