DOC: Add missing stats fields in the management manual

Following fields was missing : srv_icur, src_ilim, qtime_max, ctime_max,
rtime_max and ttime_max.

(cherry picked from commit 2ac257440943c5e32b2f380acede2c51fc9954e8)
Signed-off-by: Christopher Faulet <cfaulet@haproxy.com>
1 file changed