Ignore errors on Verify status

Currently don't have verify-status gerrit plugin installed, so this
can't run. Regardless, we don't want to fail the build if this fails.

Change-Id: I7a4ca26e7682d59e0c0841320a49c1ad97d7dba7
diff --git a/src/org/trustedfirmware/Gerrit.groovy b/src/org/trustedfirmware/Gerrit.groovy
index 732fe58..05d8398 100644
--- a/src/org/trustedfirmware/Gerrit.groovy
+++ b/src/org/trustedfirmware/Gerrit.groovy
@@ -20,6 +20,7 @@
 def verifyStatusInWorkspace(value, verify_name, category) {
   withCredentials([usernamePassword(credentialsId: 'VERIFY_STATUS', passwordVariable: 'VERIFY_PASSWORD', usernameVariable: 'VERIFY_USER')]) {
     sh("""
+  set +e
   if [ -z "\$GERRIT_HOST" ] ; then
     echo Not running for a Gerrit change, skipping vote.
     exit 0