The import job now updates its `ended_at` time at the end of the import
job. The mock didn't know this, though, so it gave us an error at that
call. Add a new expectation for the update of the `ended_at` time to get
this test to pass again.

The code was changed in 038710b22ccf3dd2421ec8d07fae45ef05a47ada, but
the tests weren't changed to reflect this.

In that change, the subdir enumeration is stopped if the `HTTPService`
POST request fails with an error.

This caused us to receive the following error when running the tests:

    2) WorkbenchImportWorker multireferential zipfile with error downloads a zip file, cuts it, and uploads some pieces
       Failure/Error:
         expect { worker.perform import.id }.to raise_error(
           StopIteration,
           post_response_failure.body
         )

         expected StopIteration with {:error=>"What was you thinking"}, got #<StopIteration: {:error=>"What was you thinking"}> with backtrace:
           # ./app/workers/workbench_import_worker.rb:63:in `upload_entry_group'
           # ./app/workers/workbench_import_worker.rb:38:in `each'
           # ./app/workers/workbench_import_worker.rb:38:in `each_with_index'
           # ./app/workers/workbench_import_worker.rb:38:in `upload'
           # ./app/workers/workbench_import_worker.rb:15:in `perform'
           # ./spec/workers/workbench_import_worker_spec.rb:105:in `block (4 levels) in <top (required)>'
           # ./spec/workers/workbench_import_worker_spec.rb:105:in `block (3 levels) in <top (required)>'
           # -e:1:in `<main>'
       # ./spec/workers/workbench_import_worker_spec.rb:105:in `block (3 levels) in <top (required)>'
       # -e:1:in `<main>'

In order to get around this, just catch the error. Hopefully this is
right.

Was getting this error as a result of the new parameters expected in
`mock_post`:

    2) WorkbenchImportWorker multireferential zipfile with error downloads a zip file, cuts it, and uploads some pieces
       Failure/Error:
         HTTPService.post_resource(
           host: export_host,
           path: export_path,
           params: params(eg_file, eg_name))

         HTTPService received :post_resource with unexpected arguments
           expected: ({:host=>"http://www.example.com", :path=>"/api/v1/netex_imports.json", :params=>{:netex_import=>{:par... @original_filename="subdir 0.zip", @local_path="local.path", @io=#<Double "subdir 0">, @opts={}>}}})
                got: ({:host=>"http://www.example.com", :path=>"/api/v1/netex_imports.json", :params=>{:netex_import=>{:par.../stif-boiv/tmp/imports/WorkbenchImport_subdir 0_38821.zip>, @opts={}>}}})
         Diff:
         @@ -7,5 +7,5 @@
                :workbench_id=>1019,
                :name=>"subdir 0",
                :file=>
         -       #<UploadIO:0x007f9bd144dbe8 @content_type="application/zip", @original_filename="subdir 0.zip", @local_path="local.path", @io=#<Double "subdir 0">, @opts={}>}}}]
         +       #<UploadIO:0x007f9bd14a1450
         @content_type="application/zip", @original_filename="subdir 0.zip", @local_path="/.../stif-boiv/tmp/imports/WorkbenchImport_subdir 0_38821.zip", @io=#<File:/.../stif-boiv/tmp/imports/WorkbenchImport_subdir 0_38821.zip>, @opts={}>}}}]

       # ./app/workers/workbench_import_worker.rb:29:in `execute_post'
       # ./app/workers/workbench_import_worker.rb:59:in `upload_entry_group'
       # ./app/workers/workbench_import_worker.rb:38:in `each'
       # ./app/workers/workbench_import_worker.rb:38:in `each_with_index'
       # ./app/workers/workbench_import_worker.rb:38:in `upload'
       # ./app/workers/workbench_import_worker.rb:15:in `perform'
       # ./spec/workers/workbench_import_worker_spec.rb:105:in `block (3 levels) in <top (required)>'
       # -e:1:in `<main>'

To get around this, decided to just mock the `HTTPService#upload` method
because I don't really care about these attributes.

Since the concept of `entry_groups` was changed to `subdirs`, this
change needs to be reflected in the tests.

Instead of looping over `entry_groups`, we now loop over `subdirs`, and
pass this object directly to `mock_post`.

The `mock_post` helper is now rewritten to reflect the new structure
of post parameters. Remove the `params` `let` because it's not used
anywhere else and we need to pass the arguments to `mock_post` into it.

This currently errors because `Faraday::UploadIO` isn't passed the
parameters that are expected in `mock_post`.

This changed in the new `ZipService`. We're now using a `Subdir` object,
we we need to use that in the tests instead of the
`entry_group_streams`.