Add CurrentHostPortListener stomp.py conn. listener
Connectors set default listeners on __init__
Get current host and port from tracker listener
Use stomp.py from source code

Current code base doesn't work with current stomp.py version (4.0.7),
however the fix for it doesn't work because of a bug on that version,
fixed in their master branch.

Since my fix is backwards compatible (and I hope forwards too), just use
their master branch until they released a new version with master code.
Merge pull request #10 from rafaduran/bug/stompy.py_latest_bug

Stomp.py latest version issue