Test that zone restrictions work correctly

[colin-nolan]

Baton queries that are restricted to particular zones are not currently tested.

[colin-nolan]

Attempted to setup zones in iRODS using test-with-baton helper method. However when zone restricted imeta queries were used, they did not obay the zone restrictions. Indicates that either the icommand zone restriction does not work or the test-with-baton helper method does not setup zones correctly.

[colin-nolan]

Related tests for metadata queries written but currently skipped. No tests for zone restricted specific queries.