title: Store variables out of the bundle in osgi
body: <p>I have one question about blueprint in OSGI Bundles. I bundle activiti in one, but there are some configurations that have to be made in the blueprint to get it work. i don't want to compile the bundle new for every time I change those settings. is it possible to store them out out the blueprint to change it needing only to restart the bundle?</p>
  
  <pre><code> &lt;bean id="configuration" class="org.activiti.engine.impl.cfg.JtaProcessEngineConfiguration"
        ext:field-injection="true"&gt;
      &lt;property name="databaseType" value="h2"/&gt;
      &lt;property name="dataSource" ref="dataSource"/&gt;
      &lt;property name="transactionManager" ref="transactionManager"/&gt;
      &lt;property name="databaseSchemaUpdate" value="true"/&gt;
      &lt;property name="transactionsExternallyManaged" value="true"/&gt;
      &lt;property name="defaultCamelContext" value="defaultContext"/&gt;
      &lt;property name="mailServerHost" value="smtp.googlemail.com"/&gt;
      &lt;property name="mailServerUsername" value="xxxx"/&gt;
      &lt;property name="mailServerPassword" value="xxxx"/&gt;
      &lt;property name="mailServerPort" value="465"/&gt;
      &lt;property name="useSSL" value="true" /&gt;
      &lt;property name="useTLS" value="true" /&gt;
      &lt;property name="mailServerDefaultFrom" value="senderadress"/&gt;
  &lt;/bean&gt;
  </code></pre>
  
  <p>thank you so much!</p>