title: JHipster Project clearCheckSums on production database
body: <p>After deploying a JHipster project on a production server, I regenerated the project using former .jhipster/*.json files. 
  Therefore, liquibase changelog files have been rewritten as well. I have changed a single entity on the newly generated project by adding a field. I wish to use the previous database of the production system. </p>
  
  <p>To test this, I pulled a dump of the production database and imported it into my local Postgres installation. In IntelliJ, I select the production profile (which is configured to use PSQL instead of H2). </p>
  
  <p>When building the application using the production profile, I of course experience liquibase.exception.ValidationFailedException's, since the checksums are off.</p>
  
  <p>Thus, I want to regenerate the checksums employing liquibase:clearCheckSums goal. However, the goal only executes on H2.</p>
  
  <pre><code>[INFO]     driver: org.h2.Driver
  [INFO]     url: jdbc:h2:file:./target/h2db/db/test
  [INFO]     username: test
  [INFO]     password: ****
  [INFO]     use empty password: false
  [INFO]     properties file: null
  [INFO]     properties file will override? false
  [INFO]     prompt on non-local database? true
  [INFO]     clear checksums? false
  </code></pre>
  
  <p>Though I require a checksum reset on the production database (Postgres).</p>
  
  <p>What do I have to do to execute on Postgres instead?</p>