MEDIUM: stats: Add enum srv_stats_state

Add an enumeration to make the handling of the states of servers
in status messages somewhat clearer.

This is the first of a two-step attempt to disentangle the state and
colour of status information. A subsequent patch will separate state
colours from the states themselves.

This patch should not make any functional changes.

Signed-off-by: Simon Horman <horms@verge.net.au>
1 file changed