Merge pull request #1661 from edx/jarv/fix-force

the force option was not used correctly

util/jenkins/issue-certificate.sh

@@ -13,7 +13,7 @@ elif [ "$regenerate" = "true" ] ; then
     $ansible "$manage regenerate_user -c $course_id -u $username"
   else
     $ansible "$manage ungenerated_certs -c $course_id && $manage gen_cert_report -c $course_id" | grep -A2 "Looking up certificate states for" | sed 's/rm:.*//'
-  if [ "$force_certificate_state" ]; then
-    $ansible "$manage ungenerated_certs -c $course_id $force_certificate_state && $manage gen_cert_report -c $course_id" | grep -A2 "Looking up certificate states for" | sed 's/rm:.*//'
+  if [ -n "$force_certificate_state" ]; then
+    $ansible "$manage ungenerated_certs -c $course_id -f $force_certificate_state && $manage gen_cert_report -c $course_id" | grep -A2 "Looking up certificate states for" | sed 's/rm:.*//'
   fi
 fi