env: add a method for getting the mobile net state in KBFS
env: add a method for getting the mobile net state in KBFS

Issue: HOTPOT-2047

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