SRAMP-561  Support Fuse JMS

https://issues.jboss.org/browse/SRAMP-561
We need to obtain the value of the password introduced in the overlord-commons ant process. As the values of the properties are not shared between different ant processes, the only way to read this property is opening the overlord.properties as property file, and then we can have access to the overlord.auth.saml-keystore-password property.