Pretest SimpleCommandLauncher patch

Author: jglick

pom.xml

@@ -68,6 +68,8 @@
         <changelist>999999-SNAPSHOT</changelist>
         <jenkins.baseline>2.479</jenkins.baseline>
         <jenkins.version>${jenkins.baseline}.1</jenkins.version>
+        <!-- TODO https://github.com/jenkinsci/jenkins-test-harness/pull/921 -->
+        <jenkins-test-harness.version>2398.vd015803ca_4d3</jenkins-test-harness.version>
         <useBeta>true</useBeta>
         <gitHubRepo>jenkinsci/${project.artifactId}-plugin</gitHubRepo>
         <hpi.compatibleSinceVersion>2.40</hpi.compatibleSinceVersion>