When using server templates, if "check-sni" is used, make sure it shows up
in all the created servers.
This should be backported to 1.8 and 1.9.
srv->check.addr = srv->agent.addr = src->check.addr;
srv->check.use_ssl = src->check.use_ssl;
srv->check.port = src->check.port;
+ srv->check.sni = src->check.sni;
/* Note: 'flags' field has potentially been already initialized. */
srv->flags |= src->flags;
srv->do_check = src->do_check;