dlm_controld: improved start messages
dlm_controld: improved start messages

Copy the improved start/sync message formats from fenced/gfs_controld,
which allows the messages to be extended in the future without breaking
compatibility.

Signed-off-by: David Teigland <cf7ba74ea50525d3d47fcd7a6d69b51121a9f873@redhat.com>

asp24/resource-agents,asp24/resource-agents,stevenraspudic/resource-agents,asp24/resource-agents,stevenraspudic/resource-agents,stevenraspudic/resource-agents