title: rspec expect compare two hash that by excluding specified keys
body: <p>Is there any spec expect which will compare two hashes by excluding specified keys alone.</p>
  
  <pre><code>H1 = {'name' =&gt; 'XXXXx', 'age' =&gt; 29, 'DOB' =&gt; 'dd/mm/yyyy'}
  H2 = {'name' =&gt; 'XXXXX', 'age' =&gt; 29, 'DOB' =&gt; 'dd/mm/yyyy'}
  </code></pre>
  
  <p>Compare the above two hashes by excluding DOB key alone.</p>