Fix unit-tests to always reference the remote connector via
require('..') instead of depending on the remote connector
bundled in loopback, which is quite often an older version.
Without this the client may attempt to connect to 'localhost' which may
resolve to the IPv6 equivalent of '0.0.0.0', which is '::', which is
only useful listening on and not so useful for connecting too.
Richard Pringle
Miroslav Bajtoš
Ryan Graham
Simon Ho
Krishna Raman