Tests for ICAT 5 Mappings

[MRichards99]

Description:

While writing the endpoint tests, I've skipped some of them that rely on ICAT 5 mappings. When ICAT 5 is released, we should unskip these tests, but only if the ICAT version is less than 5. We can get the version number through the client class. This might also be relevant for the tests on the mappings too.

Acceptance criteria:

• Detect ICAT Server version and skip certain tests if they require ICAT 5 to pass

[MRichards99]

For the tests to work, there will need to be test data added to the generator script for the new entities meaning the new entities will need to be added to the DB backend. Is it easier to rewrite the generator script using Python ICAT at this point?