mount: Add support for LIZ_CLTOMA_FUSE_(MKDIR|MKNOD)

Modify mount to send LIZ_CLTOMA_FUSE_MK* instead of CLTOMA_FUSE_MK*.
This will make it possible to implement default ACLs in the future.
Mount after this change is no longer compatible with old master servers.

Change-Id: I842ca4f56e518cf9eec328ebfc3161d1523fc886