schema_patcher.pl: Update location of ontology schema

[mkszuba]

Description

Have the schema patcher look for ontology patches in ensembl-ontology-schema rather than ols-ensembl-loader.

Use case

During a recent discussion regarding the patching of test databases in ensembl-rest it has been decided to hand the ontology schema from Production back to Infrastructure because said schema is much more closely tied with Core code than with OLS.

Benefits

ensembl-rest branch creation will be more straightforward because there will be one PR less to wait for and process.

Possible Drawbacks

It will be up to Infra again to update ontology schema version every release.

Testing

Have you added/modified unit tests to test the changes?

No.

If so, do the tests pass/fail?

N/A

Have you run the entire test suite and no regression was detected?

Yes, no regression detected. Moreover, patching test databases for version 99 using the updated script correctly retrieves and applies patch_98_99_a.sql from the new repository.

[ens-bwalts]

indeed, a good opportunity to clean up the whitespace.

[coveralls]

Coverage remained the same at 81.467% when pulling 2d7a9e8 on ontology_schema_repository into b6ff4fc on master.

[tgrego]

good to go