kbfs_ops_test: skip TestKBFSOpsPartialSync
kbfs_ops_test: skip TestKBFSOpsPartialSync

Issue: KBFS-3840

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