Comma-delimited lists in heat template defaults are incorrectly populated into the launch form

[Donovan Jones]

When using a heat template where OS::Neutron::Subnet dns_nameservers points at a yaml comma_delimited_list of nameservers eg:

  private_net_dns_servers:
    type: comma_delimited_list
    description: DNS servers for the private network
    default: [ 202.78.247.197, 202.78.247.198, 202.78.247.199 ]

  private_subnet:
    type: OS::Neutron::Subnet
    properties:
      name: { get_param: private_subnet_name }
      network_id: { get_resource: private_net }
      cidr: { get_param: private_net_cidr }
      gateway_ip: { get_param: private_net_gateway }
      allocation_pools:
        - start: { get_param: private_net_pool_start }
          end: { get_param: private_net_pool_end }
      dns_nameservers: { get_param: private_net_dns_servers }

Config examples above from this heat template: https://raw.githubusercontent.com/catalyst/catalystcloud-orchestration/master/hot/ubuntu-14.04/first-instance/first-instance.yaml

When the template above is loaded either by direct url or from a file the launch stack form is populated from the template provided. The form field is populated with the following content:

[u'202.78.247.197', u'202.78.247.198', u'202.78.247.199']

If this is run directly it results in these errors:

bug-test 5715a06f-af3c-43d7-ab9d-302527265ba3 0 minutes Create Failed Resource CREATE failed: BadRequest: resources.private_subnet: Invalid input for dns_nameservers. Reason: '[u'202.78.247.197 is not a valid nameserver. [u'202.78.247.197' is not a valid IP or hostname. Details: '[u'202.78.247.197 is not a valid IP addr

This should be:

202.78.247.197,202.78.247.198,202.78.247.199

These errors have been confirmed using the latest upstream horizon code.

[Akihiro Motoki (amotoki)]

heat panel is split out to heat-dashboard. Retargeting to heat-dashboard.