Support `mkdir' status attributes

spec/producer/core/remote/fs_spec.rb

@@ -86,18 +86,12 @@ module Producer::Core
       end
 
       describe '#mkdir' do
-        let(:path) { 'some_directory_path' }
+        let(:path)        { 'some_directory_path' }
+        let(:attributes)  { { foo: :bar } }
 
         it 'creates the directory' do
-          expect(sftp).to receive(:mkdir!).with(path, anything)
-          fs.mkdir path
-        end
-
-        it 'specifies permissions from optional mode argument' do
-          expect(sftp).to receive(:mkdir!) do |_, options|
-            expect(options[:permissions]).to eq 0700
-          end
-          fs.mkdir path, 0700
+          expect(sftp).to receive(:mkdir!).with(path, attributes)
+          fs.mkdir path, attributes
         end
       end