Merge pull request #5778 from corda/add_jenkinsfile_to_4.1_to_allow_merges

placeholder jenkins file

Jenkinsfile

@@ -0,0 +1,23 @@
+@Library('existing-build-control')
+import static com.r3.build.BuildControl.killAllExistingBuildsForJob
+
+killAllExistingBuildsForJob(env.JOB_NAME, env.BUILD_NUMBER.toInteger())
+
+pipeline {
+    agent { label 'k8s'  }
+    options { timestamps() }
+
+    stages {
+        stage('OpenSource 4.1 Placeholder build') {
+            steps {
+                sh "echo \"placeholder\""
+            }
+        }
+    }
+
+    post {
+        cleanup {
+            deleteDir() /* clean up our workspace */
+        }
+    }
+}