DOC: peers: indicate that some server settings are not usable

Let's make it clear in the peers documentation that not all server
parameters may be used, as there is some confusion around this, and
the doc was even misleading by saying that all parameters were
supported.

This should address github issue #919.

(cherry picked from commit 0f4a02b81a509fe0eb13b1455c0b39fa06c92449)
Signed-off-by: Christopher Faulet <cfaulet@haproxy.com>
(cherry picked from commit 46ce3a85a814d6bc6f70bb3076350a70a9e1a6ff)
Signed-off-by: Christopher Faulet <cfaulet@haproxy.com>
1 file changed