Add error message to build description

Change-Id: Ifffce007fbe9d3bc47ea57c30ee652b5e0bdb680
diff --git a/test-system-reclass-pipeline.groovy b/test-system-reclass-pipeline.groovy
index 8a8fbac..d28acba 100644
--- a/test-system-reclass-pipeline.groovy
+++ b/test-system-reclass-pipeline.groovy
@@ -76,6 +76,7 @@
 } catch (Throwable e) {
     // If there was an error or exception thrown, the build failed
     currentBuild.result = "FAILURE"
+    currentBuild.description = e.message
     throw e
 } finally {
     common.sendNotification(currentBuild.result,"",["slack"])