DOC: config: Fix pgsql-check documentation to make user param mandatory

The username is required in the Start-up message. Thus, since the 2.2, when
this health-check was refactored, the user parameter is mandatory. On prior
versions, when no username is provided, no pgsql check is performed but only
a basic tcpcheck.

This patch should be backported as far as 2.2.

(cherry picked from commit 59307b3e4e1fbdbe07dcbe08781c81e6312f0c23)
Signed-off-by: Christopher Faulet <cfaulet@haproxy.com>
(cherry picked from commit e8da4211a92771a7544fff2d6bab7195657fbe87)
Signed-off-by: Christopher Faulet <cfaulet@haproxy.com>
(cherry picked from commit c16ccde06540a1933041eb6ed30cc5869ce754b1)
Signed-off-by: Christopher Faulet <cfaulet@haproxy.com>
1 file changed