V5 schema does not support matching on an empty request query

[tommysitu]

In the new V5 schema, the query field is a map of key and matchers. If you set it as an empty map, Hoverfly simply ignores the query for matching, and there is no way to create a simulation to match on an empty query. As a workaround, you have to use the deprecatedQuery field to create an exact matcher on an empty query string which is likely to be removed in the future.