Test data dir should be in core, not top level
Add config loader
Add data required for tests
Add config loader test

Had to change the location of the data directories (should be a data_dir as per the config_validator test) and had to comment out two problematic tests that rely on vcloud-launcher. Taking this approach to make the PR and what I've changed clear.
Pull out location of data directory
No need for this, all tests use method
These tests are not being run

Because of the way these tests are written, they only run if the config is there, so they were 'failing' silently. They would have failed anyway because this test is now running in vcloud-core, where there is no `examples` directory.

I am not convinced of the value of these tests in any case. They are there to check our example documentation is up-to-date, but it's not clear that the example documentation is linked to or used. If it is deemed to be useful, these tests should be reimplemented in their respective gems.
Add a basic test for including a schema

This tests that the config loader works when a schema is loaded in. It's very basic. Will need to correspond with the more complex tests being implemented in their respective places.
Add a basic test for invalid schema
Move Config Loader to Core
Bump version
Merge pull request #13 from alphagov/add-config-loader

[#65625634] Add config loader to Core