config_local: journal dirty bcache max should match squash size
config_local: journal dirty bcache max should match squash size

Issue: KBFS-1927

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