HornetQMessage does not allow dots in message properties

[HornetQMessage](https://github.com/hornetq/hornetq/blob/master/hornetq-jms-client/src/main/java/org/hornetq/jms/client/HornetQMessage.java) method <code>checkProperty</code> requires any JMS message property name should be a valid java identifier. No dots are allowed. Renaming vertx properties so that they comply to the rules.
The issue is similar to [this one](https://github.com/hibernate/hibernate-search/commit/e0042820192eae62586dea67bff16ba6b064c8b9) identified in hibernate-search integration.