RA doesn't allow multiple servers when using static connector

currently you can only configure 1 connector when not using discovery. This means you cant use static connectors with failover. We need to change this so users can define multiple connectors, like this:

<config-property-name>ConnectorClassName</config-property-name>
<config-property-type>java.lang.String</config-property-type>
<config-property-value>org.hornetq.core.remoting.impl.netty.NettyConnectorFactory,org.hornetq.core.remoting.impl.netty.NettyConnectorFactory</config-property-value>

and

<config-property-name>ConnectionParameters</config-property-name>
<config-property-type>java.lang.String</config-property-type>
<config-property-value>host=127.0.0.1;port=5445,host=127.0.0.1;port=5446</config-property-value>