REORG: server: Export srv_settings_cpy() function

This function will be used to init a proxy with settings of the default
proxy. It is mandatory to fix a bug. To do so, it must be exposed.

(cherry picked from commit b32cb9b5151d4b42ff92edd707d61960f8b3a536)
Signed-off-by: Willy Tarreau <w@1wt.eu>
(cherry picked from commit b45110ad060b4e980d6485ed686ab9418debad81)
Signed-off-by: Willy Tarreau <w@1wt.eu>
(cherry picked from commit 582688ac13ed14dfd0369005920d73d7c351189d)
Signed-off-by: Willy Tarreau <w@1wt.eu>
diff --git a/src/server.c b/src/server.c
index 5f39d51..fe50fb9 100644
--- a/src/server.c
+++ b/src/server.c
@@ -2168,7 +2168,7 @@
  * <srv_tmpl> distinguishes these two cases (must be 1 if <srv> is a template,
  * 0 if not).
  */
-static void srv_settings_cpy(struct server *srv, const struct server *src, int srv_tmpl)
+void srv_settings_cpy(struct server *srv, const struct server *src, int srv_tmpl)
 {
 	/* Connection source settings copy */
 	srv_conn_src_cpy(srv, src);