@Override
  public int hashCode() {
    return Objects.hash(id, mpackName, mpackVersion);
  }
Generates a hash for the mpack based on the following criteria:
<ul>
<li>{@link #id}
</ul>
<p/>
<p/>
{@inheritDoc}
ambari-server/src/main/java/org/apache/ambari/server/orm/entities/MpackEntity.java