fix(pipeline): log unstashed files for better debugging

Signed-off-by: zhenyus <zhenyus@mathmast.com>

first-class-pipeline/vars/executeFreeleapsPipeline.groovy

@@ -535,9 +535,12 @@ spec:
                       def stashName = artifact.replace('/', '-').replace('.', '-')
                       log.info("Pipeline", "Fetch stashed directory ${artifact} for ${component.name}...")
                       unstash "${component.name}-${stashName}"
+                      def artifactList = sh(script: "ls ${artifact} -al", returnStdout: true)
+                      log.info("Pipeline", "Unstashed files: ${artifactList}")
                     }
                   }
 
+
                   if (component.dockerfile != null && !component.dockerfile.isEmpty()) {
                     log.error("Pipeline", "Component ${component.name} dockerfile not set!")
                   }