Work around loadFixture error in CI

- Move the mysql-config fixture into the data with the rest of the files
- Add a new GlobalConfig.test_url which is the root url of the test run.
- Make all fixture loading a full path based on the test_url added.
- Update all code to use the loadFixture vs their own Y.io calls.
Merge pull request #7 from mitechie/json-loading

- Move the mysql-config fixture into the data with the rest of the files
- Add a new GlobalConfig.test_url which is the root url of the test run.
- Make all fixture loading a full path based on the test_url added.
- Update all code to use the loadFixture vs their own Y.io calls.