Fix rubocop issues from #861

[technoweenie]

Goal is to fix the rubocop failures in master that came from #861:

spec/support/shared_examples/request_method.rb:53:9: C: Layout/IndentationWidth: Use 2 (not -4) spaces for indentation. (https://github.com/rubocop-hq/ruby-style-guide#spaces-indentation)
        conn.public_send(http_method, '/', 'test')
        ^^^^
spec/support/shared_examples/request_method.rb:54:7: C: Layout/ElseAlignment: Align else with if.
      else
      ^^^^
spec/support/shared_examples/request_method.rb:58:7: W: Layout/EndAlignment: end at 58, 6 is not aligned with if at 52, 12.
      end
      ^^^
spec/support/shared_examples/adapter.rb:82:3: C: Layout/IndentationWidth: Use 2 (not 1) spaces for indentation. (https://github.com/rubocop-hq/ruby-style-guide#spaces-indentation)
   let(:http_method) { :options }
  ^
spec/support/shared_examples/adapter.rb:84:5: C: Layout/IndentationConsistency: Inconsistent indentation detected. (https://github.com/rubocop-hq/ruby-style-guide#spaces-indentation)
    it_behaves_like 'a request method', :options
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
spec/support/shared_examples/adapter.rb:107:5: C: Layout/IndentationWidth: Use 2 (not 1) spaces for indentation. (https://github.com/rubocop-hq/ruby-style-guide#spaces-indentation)
     let(:http_method) { :trace }
    ^
spec/support/shared_examples/adapter.rb:109:7: C: Layout/IndentationConsistency: Inconsistent indentation detected. (https://github.com/rubocop-hq/ruby-style-guide#spaces-indentation)
      it_behaves_like 'a request method', :trace
      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

[technoweenie]

@iMacTia Code Climate did not catch the rubocop failure. I still get the first 3 offenses.