Merge pull request #466 from edx/jarv/fix-elb-reg

Jarv/fix elb reg

util/jenkins/ansible-provision.sh

@@ -48,7 +48,7 @@ if [[ -z $zone ]]; then
 fi
 
 if [[ -z $elb ]]; then
-  elb="!!null"
+  elb="false"
 fi
 
 if [[ -z $dns_name ]]; then
@@ -106,7 +106,7 @@ gh_users:
 dns_zone: $dns_zone
 rabbitmq_refresh: True
 GH_USERS_PROMPT: '[$name_tag] '
-elb: "$elb"
+elb: $elb
 EOF
     cat $extra_vars
     # run the tasks to launch an ec2 instance from AMI