Fails to install minitest via bundle in puppet-openstack-unit-5.5-centos-7 job

[Takashi Kajinami]

puppet-openstack-unit-5.5-centos-7 job is failing because it failes to install minitest.

https://329524fe8c78dc3f4d3f-ae8ba89a9e884654d36a1898db080f6a.ssl.cf2.rackcdn.com/685024/8/check/puppet-openstack-unit-5.5-centos-7/252802a/job-output.txt

~~~
2019-09-28 13:21:58.085642 | centos-7 | Gem::InstallError: minitest requires Ruby version ~> 2.3.
2019-09-28 13:21:58.085936 | centos-7 | An error occurred while installing minitest (5.12.1), and Bundler cannot
2019-09-28 13:21:58.086026 | centos-7 | continue.
2019-09-28 13:21:58.086249 | centos-7 | Make sure that `gem install minitest -v '5.12.1' --source
2019-09-28 13:21:58.086427 | centos-7 | 'https://rubygems.org/'` succeeds before bundling.
~~~

We see that minitest introduced requirement about ruby version (~>2.3) in 5.12.1
https://rubygems.org/gems/minitest/versions/5.12.0
https://rubygems.org/gems/minitest/versions/5.12.1

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/puppet-openstack_spec_helper queens-eol release.

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/puppet-openstack_spec_helper rocky-eol release.

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/puppet-openstack_spec_helper stein-eol release.

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/puppet-openstack_spec_helper victoria-eol release.

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/puppet-openstack_spec_helper ussuri-eol release.

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/puppet-openstack_spec_helper train-eol release.

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/puppet-openstack_spec_helper yoga-eom release.

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/puppet-openstack_spec_helper wallaby-eom release.

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/puppet-openstack_spec_helper xena-eom release.