title: jhipster liquibase validation error after modify entity
body: <p>I was trying to add an field to my entity as a CLOB. When using the JHipster CLI it was no problem to add it. </p>
  
  <p>Now, when i trying to start my application i get the following validation error from liquibase:</p>
  
  <pre><code>liquibase.exception.ValidationFailedException: Validation Failed:
       1 change sets check sum
            config/liquibase/changelog/20170221193921_xxxxxxxx.xml::20170221193921-1::jhipster was: 7:d8b3f42d8d4d523c7b14f93b4c7657c7 but is now: 7:a2a365179a0d231c2771ebd79f51b1fc
  </code></pre>
  
  <p>i also tried the following:</p>
  
  <pre><code>./mvnw liquibase:clearCheckSums
  </code></pre>
  
  <p>The result was <code>BUILD SUCCESS</code>.</p>
  
  <p>i also tried ./mvnw liquibase:update and updateSQL, same result.</p>
  
  <p>Can anyone tell me what my problem is with JHipster?</p>