Fixes for failing tests on platforms without Mongo
Fixes for failing tests on platforms without Mongo

- Skips some tests/assertions when the Mongo extension is not loaded.
- Alters other tests to ensure they can execute without need for the Mongo
  extension.

gartner/zf-apigility-admin,gartner/zf-apigility-admin,jguittard/zf-apigility-admin,jguittard/zf-apigility-admin,ildanno/zf-apigility-admin,ildanno/zf-apigility-admin