Sanitize launchable build name (#11174)

* Launchable rejects a name with embedded '%2F'

The '%2F' is a URL encoded '/' and occurs when a branch name with a '/'
is pushed to the Jenkins core repository.

This first step in the fix is to show that the bug exists.

* Sanitize launchable build name

Author: MarkEWaite

Jenkinsfile

@@ -29,14 +29,16 @@ stage('Record build') {
         /*
          * TODO Add the commits of the transitive closure of the Jenkins WAR under test to this build.
          */
-        sh 'launchable verify && launchable record build --name ${BUILD_TAG} --source jenkinsci/jenkins=.'
+        // Replace URL encoded characters with '-' because Launchable rejects '%2F' in build name
+        def launchableName = env.BUILD_TAG.replaceAll('(%[0-9A-Fa-f]{2})+', '-')
+        sh "launchable verify && launchable record build --name ${launchableName} --source jenkinsci/jenkins=."
         axes.values().combinations {
           def (platform, jdk) = it
           if (platform == 'windows' && jdk != 17) {
             return // unnecessary use of hardware
           }
           def sessionFile = "launchable-session-${platform}-jdk${jdk}.txt"
-          sh "launchable record session --build ${env.BUILD_TAG} --flavor platform=${platform} --flavor jdk=${jdk} >${sessionFile}"
+          sh "launchable record session --build ${launchableName} --flavor platform=${platform} --flavor jdk=${jdk} >${sessionFile}"
           stash name: sessionFile, includes: sessionFile
         }
       }