Add 'consistent', 'cached', and 'delegated' mode flags
Add 'consistent', 'cached', and 'delegated' mode flags

This adds 'consistency' mode flags to the mount command line argument.
Initially, the valid 'consistency' flags are 'consistent', 'cached',
'delegated', and 'default'.

Signed-off-by: David Sheets <aa5a275c249287abd0efa0c6aac4f0ceae1404c4@docker.com>
Signed-off-by: Jeremy Yallop <ff9ab3e0493661a48402120b7585a87a84d80172@docker.com>

dnephin/cli,thaJeztah/cli,e11137/cli,Zebrilee/cli,docker/cli,riyazdf/cli,ashfall/cli,riyazdf/cli,thaJeztah/cli,allencloud/cli,Zebrilee/cli,e11137/cli,docker/cli,allencloud/cli,cpuguy83/cli,ashfall/cli,cpuguy83/cli,redpanda/cli,redpanda/cli,dnephin/cli