openstack/puppet-oslo - puppet-oslo - OpenDev: Free Software Needs Free Tools

Recent update in rspec-puppet removed some of the config interfaces for
old puppet versions[1]. This drops usage of these interfaces to resolve
the following error in unit tests.
```
An error occurred while loading ./spec/unit/provider/manila_spec.rb.
Failure/Error: c.manifest_dir = File.join(fixture_path, 'manifests')
NoMethodError:
 undefined method `manifest_dir='...
```
[1] 316d95923c
Change-Id: I4e721db958c1e47efd6bf9141fa779240d3c5b60

This change defines manifest_dir and module_path expicitly in unit
tests so that modules installed under fixtures directory is properly
loaded.
Change-Id: I5bf6cd967d1e0e9fe4eaac0dac242dbc7b88a771
Closes-Bug: #1930403 

This change updates the module to use the rspec-puppet-facts as defined
in the puppet-openstack_spec_helper.
Change-Id: I295722d3accc7ac2d49514ca1abe2806077f7aa5

This patch aims to make puppet-oslo work:
 - fix oslo::versionedobjects spec
 - fix oslo::policy
 - drop mock dependency
 - add acceptance by msync
Co-Authored-By: Emilien Macchi <emilien@redhat.com>
Closes-Bug: #1492636
Change-Id: Icbb1df3498432d2a95342a14ce57b45b65a132c9

- spec_helper.rb
 - spec_helper_acceptance.rb