standalone dns server contains python encoding which results in a bad nameserver configuration

[Alex Schultz]

For the standalone DnsServers, the value is currently being set to [u'127.0.0.1'] in the standalone_parameters.yaml which results in a bad /etc/resolv.conf containing "nameserver u127.0.0.1"

http://logs.openstack.org/92/616592/1/check/tripleo-ci-centos-7-standalone/16ef030/logs/undercloud/home/zuul/standalone_parameters.yaml.txt.gz
parameter_defaults:
  CertmongerCA: local
  CloudName: 192.168.24.1
  ContainerCli: docker
  ControlPlaneStaticRoutes: []
  Debug: true
  DeploymentUser: zuul
  DnsServers: [u'127.0.0.1']
  DockerInsecureRegistryAddress:
  - 192.168.24.1:8787
  MasqueradeNetworks:
    192.168.24.0/24:
    - 192.168.24.0/24
  NeutronPublicInterface: br-ex
  StandaloneCtlplaneLocalSubnet: ctlplane-subnet
  StandaloneCtlplaneSubnets:
    ctlplane-subnet:
      DhcpRangeEnd: 192.168.24.40
      DhcpRangeStart: 192.168.24.20
      NetworkCidr: 192.168.24.0/24
      NetworkGateway: 192.168.24.1
  StandaloneEnableRoutedNetworks: false
  StandaloneHomeDir: /home/zuul
  StandaloneLocalMtu: 1500
  NovaComputeLibvirtType: qemu
  SELinuxMode: permissive

http://logs.openstack.org/92/616592/1/check/tripleo-ci-centos-7-standalone/16ef030/logs/undercloud/etc/resolv.conf.txt.gz
nameserver u127.0.0.1

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/617048

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/617048
Committed: https://git.openstack.org/cgit/openstack/tripleo-quickstart-extras/commit/?id=ae1d1ab9e2a82c46c676b60a0c70644ef1740c24
Submitter: Zuul
Branch: master

commit ae1d1ab9e2a82c46c676b60a0c70644ef1740c24
Author: Alex Schultz <email address hidden>
Date: Fri Nov 9 17:47:07 2018 -0700

    Correctly handle complex nameserver types for standalone

    If the undercloud_undercloud_nameserver is an array, it's not being
    properly represented in the output yaml. Let's use the ansible to_json
    filter to properly handle this in the resulting yaml.

    Change-Id: Ia16060e2c2e524d0a4c83980b2fd9fafef09196f
    Closes-Bug: #1802611

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/tripleo-quickstart-extras 2.1.1 release.