[#62223252] QueryRunner integration test

This tests the QueryRunner#available_query_types and QueryRunner#run methods, in particular for the common needs that our dependent tooling requires.

For #run, the :filter and :fields options are tested for the vAppTemplate type, which covers a lot of the vcloud-query usage.

There are other #run options that should also be tested, in particular sortAsc and sortDesc, but these can be added in a separate PR.

This PR adds a decent - passing - set of integration tests that can be built upon.