* Adds Runtime::Scenario as a place to record the properties of the
Scenario we're interested in.
* Adds a positional argument to Test::Integration::Mattermost to specify
Runtime::Scenario.mattermost
* Adds Page::Mattermost::{Main,Login} to model the mattermost pages we
need to interact with.
* Adds qa/features/mattermost/login_spec to perform a login via oauth
and ensure we are logged in.
Here we add a new entrypoint for the test suite,
Test::Integration::Mattermost. It is to ensure that mattermost
integration is working when enabling the embedded mattermost of
gitlab-omnibus
It runs all the example groups from Test::Instance, in addition to any
groups tagged :mattermost
* Extracts a common entrypoint class from Test::Instance as
Scenario::Entrypoint, and uses that as the base for Test::Instance and
Test::Integration::Mattermost
* RSpec groups defined in `specs/features/mattermost/**_spec.rb` are
tagged with :mattermost so they can be filtered out of the default
run.
* Tests tagged :mattermost are filtered out by default, and are
un-filtered by Test::Integration::Mattermost
