dht: fix keyInRange function for string types

strings were failing to be detected and this was resulting in a single
bucket which never was allowed to split

Signed-off-by: Thomas Stilwell <stilwellt@openlabs.co>
use sigterm instead of sigkill to kill the server

sys.exit() causes a hang for some reason but
os._exit() does not

Signed-off-by: Thomas Stilwell <stilwellt@openlabs.co>
don't override local ip address
remove seed.openlabs.co because it breaks seed.openlabs.co :(
debug output