[Oaisys] Fix failing tests

[ConnorSheremeta]

There are two failing tests for oaisys in jupiter below:

E

Error:
OaisysListSetsTest#test_test_list_sets_resumption_token_xml:
ActionController::RoutingError: No route matches [GET] "/oai/oai"
    test/integration/oaisys_list_sets_test.rb:47:in `block in <class:OaisysListSetsTest>'


rails test test/integration/oaisys_list_sets_test.rb:12

...E

Error:
OaisysListIdentifiersTest#test_list_identifers_items_xml:
ActionController::RoutingError: No route matches [GET] "/oai/oai"
    test/integration/oaisys_list_identifiers_test.rb:48:in `block in <class:OaisysListIdentifiersTest>'


rails test test/integration/oaisys_list_identifiers_test.rb:18

as soon as match '/oai/(*all)', to: 'application#service_unavailable', via: [:get, :post] is removed (which is required for it to work) the tests fail.

[ConnorSheremeta]

This has been found to be a rails bug and has been submitted here rails/rails#40078

Will skip the tests for now