Add dump_threads integration tests helper
Move base connectors tests where they belong
Add ActiveMQ message priority header
Add SSL ActiveMQ support for Vagrant
Add missing keystore/trustore to ActiveMQ script
Don't install unittest2 on Travis
Fix ActivemeMQ keystore/trutstore path
Ignore all logs
Add pymco.config.Config#get_ssl_parameters method

This will help me developing the new listener required for ActiveMQ SSL
parameters tracking.
Pass config. and connector to default listeners
Add looponfailroots configuration to pytest.ini
Add get_ssl_params method to Config class
Connector sets SSL configuration
Test ActiveMQ under SSL connection
Update stomp.py required version