Bump libkbfs DSL test timeout to 5m, too
Bump libkbfs DSL test timeout to 5m, too

Hitting this on Travis OS X bots, too.

keybase/client,keybase/client,keybase/kbfs,keybase/client,keybase/client,keybase/kbfs,keybase/client,keybase/kbfs,keybase/client,keybase/kbfs,keybase/client,keybase/client,keybase/client,keybase/client,keybase/client,keybase/client