don't overwrite KEYBASE_RUN_MODE in run_keybase if set
don't overwrite KEYBASE_RUN_MODE in run_keybase if set

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