Added exception rethrown to lab-pipeline

Change-Id: I6c18906c7bbfb9fde50f5685a2a1fab6d82ed060
diff --git a/lab-pipeline.groovy b/lab-pipeline.groovy
index da04f62..fb8559c 100644
--- a/lab-pipeline.groovy
+++ b/lab-pipeline.groovy
@@ -274,6 +274,7 @@
                         salt.runSaltProcessStep(saltMaster, '*', 'state.apply', [], null, true)
                     } catch (Exception e) {
                         common.warningMsg('State apply failed but we should continue to run')
+                        throw e
                     }
                 }
             }