Added tweak to spec so that SSH runs on 127.0.0.1:8102 to avoid interfering with
OpenNMS's Karaf SSH.
Updated opennms-setup.karaf and smnnepo-setup.karaf to use ActiveMQ's
"activemq" feature to load the main ActiveMQ broker.
Added ActiveMQ configs as Maven artifacts and changed features.xml so that they
are pulled in as part of the ActiveMQ sampler features.