title: Changes to solrconfig.xml are not reflected in SolrCloud
body: <p>Solr Version: 7.1.0</p>
  
  <p>Changes I made to solrconfig.xml:</p>
  
  <p>Added a updateRequestProcessorChain using TolerantUpdateProcessorFactory as suggested <a href="https://lucene.apache.org/solr/7_1_0/solr-core/org/apache/solr/update/processor/TolerantUpdateProcessorFactory.html" rel="nofollow noreferrer">here</a></p>
  
  <pre class="lang-xml prettyprint-override"><code>&lt;updateRequestProcessorChain name="tolerant"&gt;
      &lt;processor class="solr.TolerantUpdateProcessorFactory"&gt;
        &lt;int name="maxErrors"&gt;10&lt;/int&gt;
      &lt;/processor&gt;
      &lt;processor class="solr.RunUpdateProcessorFactory" /&gt;
  &lt;/updateRequestProcessorChain&gt;
  </code></pre>
  
  <p>Error:  </p>
  
  <pre class="lang-js prettyprint-override"><code>{
    "responseHeader": {
      "status": 400, 
      "QTime": 1
    },
    "error": {
      "msg": "unknown UpdateRequestProcessorChain: tolerant", 
      "code": 400, 
      "metadata": [
        "error-class", 
        "org.apache.solr.common.SolrException", 
        "root-error-class", 
        "org.apache.solr.common.SolrException"
      ]
    }
  }
  </code></pre>
  
  <p>POST request:<br>
  <code>http://&lt;solr-endpoint&gt;/solr/&lt;core-name&gt;/update/json?update.chain=tolerant&amp;maxErrors=3</code></p>
  
  <p>solrconfig.xml location: </p>
  
  <pre><code>/opt/solr-7.1.0/server/solr/configsets/_default/conf/solrconfig.xml
  </code></pre>
  
  <p>which is symlinked to <strong>/opt/solr</strong> directory, which is Solr install directory.</p>
  
  <p>I have tried restarting Solr (<code>$ sudo service solr restart</code>) and also reloading the cores from Solr AdminUI but the request keeps giving the same error saying unknown UpdateRequestProcessorChain. </p>