Use new piper identifier in tests (#1391)

consumer-test/TestRunnerThread.groovy

@@ -86,7 +86,7 @@ class TestRunnerThread extends Thread {
     private void setLibraryVersionInJenkinsfile() {
         def jenkinsfile = new File("${testCaseWorkspace}/Jenkinsfile")
         def manipulatedText =
-            "@Library(\"piper-library-os@${libraryVersionUnderTest}\") _\n" +
+            "@Library(\"piper-lib-os@${libraryVersionUnderTest}\") _\n" +
                 jenkinsfile.text
         jenkinsfile.write(manipulatedText)
     }

consumer-test/jenkins.yml

@@ -11,7 +11,7 @@ unclassified:
             git:
               remote: "https://github.com/SAP/cloud-s4-sdk-pipeline-lib.git"
     - defaultVersion: "master"
-      name: "piper-library-os"
+      name: "piper-lib-os"
       retriever:
         modernSCM:
           scm: