How to correctly set puppet attributes with AppD?

Question

Hello,
I'm trying to add a value to a puppet attribute within AppD. The value is an array and should look something like this ['ntp1.testlab.local'] for puppet to work. The problem is after AppD processes it, it ends up looking like this '["ntp1.testlab.local"]' in the node's manifest, which doesn't work. I've tried several variations with no joy. Can anyone please show me how to correctly set puppet variables within AppD?
From the node manifest created by AppD:
[root@ar-syslog-tlab-01 appd_nodes]# grep "Puppet_ntp_v3_1_2_servers =" /etc/puppetlabs/puppet/manifests/appd_nodes/CentOS-LON4FRQT.pp
  $Puppet_ntp_v3_1_2_servers = '["ntp1.testab.local"]'
From stdout and stderr log available on VM at /tmp/25/CG_Puppet_ntp_v3.1.2_AI-REMEDIATE_NODE/task.stdlog.
- !ruby/object:Puppet::Util::Log
      level: !ruby/sym err
      tags:
        - err
      message: "Could not retrieve catalog from remote server: Error 400 on SERVER: Could not parse for environment production: Syntax error at '['; expected ']' at /etc/puppetlabs/puppet/manifests/appd_nodes/CentOS-IEU4RJWH.pp:17 on node centos-lon4frqt"
      source: Puppet
If I edit the node's manifest to read
       $Puppet_ntp_v3_1_2_servers = [ 'ntp1.testab.local' ]
it works fine.
Any tips would be greatly appreciated.
Thanks.

Answer 1

If it is a bug, you maybe have a workaround by adding a script task in the execution plan the Blueprint as the first task to edit /etc/puppetlabs/puppet/manifests/appd_nodes/CentOS-LON4FRQT.pp to modify the value of $Puppet_ntp_v3_1_2_servers, and then the rest tasks will get the correct value format for $Puppet_ntp_v3_1_2_servers.