Improved setting error messages to jenkins job descriptions

Change-Id: Ia19224b7334d6fd468ecc40be87d5b4df795adc5
diff --git a/test-cookiecutter-reclass.groovy b/test-cookiecutter-reclass.groovy
index 482b349..4da0842 100644
--- a/test-cookiecutter-reclass.groovy
+++ b/test-cookiecutter-reclass.groovy
@@ -165,7 +165,7 @@
 
     } catch (Throwable e) {
          currentBuild.result = "FAILURE"
-         currentBuild.description = e.message
+         currentBuild.description = currentBuild.description ? e.message + " " + currentBuild.description : e.message
          throw e
     } finally {
          def dummy = "dummy"