Autodetect chutney if next to tor
Typically, the chutney and tor directories exist side-by-side. When src/test/test-network.sh is invoked, it should check for a chutney directory next to the tor directory before failing with a missing CHUTNEY_PATH.
Typically, the chutney and tor directories exist side-by-side. When src/test/test-network.sh is invoked, it should check for a chutney directory next to the tor directory before failing with a missing CHUTNEY_PATH.