title: liquibase:diff not giving me expected result
body: <p>I have a <code>JPA entity</code> called customer and goes like this </p>
  
  <pre><code>@Entity
  public class Customer {
  
  
  
  private int custNo;
  private String custName;
  private String country;
  
  public Customer() {
  }
  
  public Customer(int custNumber, String custName, String country) {
      this.custNo = custNumber;
      this.custName = custName;
      this.country = country;
  }
  
  public int getCustNo() {
     return custNo;
  }
  
  public void setCustNo(int custNo) {
     this.custNo = custNo;
  }
  
  public String getCustName() {
     return custName;
  }
  
  public void setCustName(String custName) {
     this.custName = custName;
  }
  
  public String getCountry() {
     return country;
  }
  
  public void setCountry(String country) {
     this.country = country;
  }
  }
  </code></pre>
  
  <p>and my db has 2 tables :- BE132_name and BE1jj231_address ,</p>
  
  <p>I am running my profile <code>liquibase:diff</code> and is giving me the change set as follows</p>
  
  <pre><code>    &lt;changeSet author="jobs (generated)" id="1554122585461-10"&gt;
      &lt;dropTable tableName="BE132_name"/&gt;
      &lt;/changeSet&gt;
      &lt;changeSet author="jobs (generated)" id="1554122585461-11"&gt;
      &lt;dropTable tableName="BE1jj231_address"/&gt;
      &lt;/changeSet&gt;
  </code></pre>
  
  <p>As you can see it created drop table since I dont have its corresponding <code>JPA</code> entities. But why is it not creating the <code>create script</code> for my Customer ?</p>
  
  <p>For an empty data base (one without any tables) , I am getting</p>
  
  <pre><code> INFO 4/2/19 5:47 PM: liquibase: No changes found, nothing to do
  </code></pre>