Add helper function to get all proto enum info (#1965)
Add helper function to get all proto enum info (#1965)

Signed-off-by: Grant Griffiths <7561d7b6fa252e14d948ef730f22c68c9d861f6b@portworx.com>
libopenstorage/openstorage,libopenstorage/openstorage,libopenstorage/openstorage