Expose remove stub mapping by ID through admin client (HttpAdminClient)

[marekpietrasz]

Would be great to allow to delete a stub mapping by ID using admin client.

Current behaviour of method wireMock.removeStubMapping on external server leads to post request with json body that in our case matches too many mappings (we have a problem with multiple mappings to the same url and body but this is separate issue).

After checking existing implementation method removeStubMapping on HttpAdminClient is using OldRemoveStubMappingTask. There is also RemoveStubMappingTask that probably was designed to be used against /__admin/mappings/{id} but is not exposed AFAIK

Would be great to expose existing RemoveStubMappingTask and allow to remove mappings by ID to allow better management of stubs (in ideal world stubs are well defined and existing method is good enough but this is not the case for us)

[tomakehurst]

Yeah, I agree this should be exposed in the Java client, since it's available via REST.

[Patrolfr]

I'm working on it.

[Patrolfr]

PR: #1986