title: case insensitive search for solr facets but actual value needs to be shown
body: <p>I want to get case insensitive search for facets in solr.Below is my facet field and field type declaration.</p>
  
  <p>//stored=true to get actual values</p>
  
  <pre><code>&lt;fieldType name="c_text" class="solr.TextField"&gt;
      &lt;analyzer type="index"&gt;
          &lt;tokenizer class="solr.WhitespaceTokenizerFactory"/&gt;
          &lt;filter class="solr.LowerCaseFilterFactory"/&gt;
      &lt;/analyzer&gt;
      &lt;analyzer type="query"&gt;
          &lt;tokenizer class="solr.WhitespaceTokenizerFactory"/&gt;
          &lt;filter class="solr.LowerCaseFilterFactory"/&gt;
      &lt;/analyzer&gt;
  &lt;/fieldType&gt;
  
  &lt;dynamicField name="facet_*" type="c_text" multiValued="true"                 indexed="true" stored="true" omitNorms="true"/&gt;
  </code></pre>
  
  <p>The queries are getting resolved properly and in document values shown are in actual case but in facet results names are being shown in lower case only like below.</p>
  
  <pre><code>facet_color_family: {
  **blue**: 41,                             
  navy blue: 7
  }
  </code></pre>
  
  <p>Actual values before indexing were Blue and Navy Blue. Note that when they are shown in documents values are proper like below.</p>
  
  <pre><code> "facet_color_family": [
            "**Blue**"
          ],
  </code></pre>