Skip quietPeriod in SCMRetrieverTest

Author: jglick

src/test/java/org/jenkinsci/plugins/workflow/libs/SCMRetrieverTest.java

@@ -41,6 +41,7 @@
 import org.jenkinsci.plugins.workflow.multibranch.WorkflowMultiBranchProject;
 import org.jenkinsci.plugins.workflow.multibranch.WorkflowMultiBranchProjectTest;
 import org.jenkinsci.plugins.workflow.test.steps.SemaphoreStep;
+import org.junit.Before;
 import org.junit.ClassRule;
 import org.junit.Test;
 import org.junit.Rule;
@@ -55,6 +56,10 @@ public class SCMRetrieverTest {
     @Rule public JenkinsRule r = new JenkinsRule();
     @Rule public GitSampleRepoRule sampleRepo = new GitSampleRepoRule();
 
+    @Before public void doNotWait() {
+        r.setQuietPeriod(0);
+    }
+
     @Url("https://stackoverflow.com/a/49112612/12916")
     @Test public void selfTestLibraries() throws Exception {
         sampleRepo.init();