adds missing variable

Jenkinsfile

@@ -1,8 +1,8 @@
-// cmake '-DCMAKE_TOOLCHAIN_FILE=cmake/toolchain-mingw.cmake' .
+#!groovy
 
 def label = "jenkins-${UUID.randomUUID().toString()}"
 def repository = "registry.c.test-chamber-13.lan"
-
+def templateName = "pipeline-worker"
 podTemplate(
     label: label,
     name: templateName,