Document the num_tickets s_server option

Fixes #7727
Reviewed-by: NMatthias St. Pierre <Matthias.St.Pierre@ncp-e.com>
(Merged from https://github.com/openssl/openssl/pull/7756)

(cherry picked from commit 7ffb7fbe8c1c1bc467993389478d2ea6f00e1860)

doc/man1/s_server.pod

@@ -98,6 +98,7 @@ B<openssl> B<s_server>
 [B<-no_comp>]
 [B<-comp>]
 [B<-no_ticket>]
+[B<-num_tickets>]
 [B<-serverpref>]
 [B<-legacy_renegotiation>]
 [B<-no_renegotiation>]
@@ -558,7 +559,14 @@ OpenSSL 1.1.0.
 
 =item B<-no_ticket>
 
-Disable RFC4507bis session ticket support.
+Disable RFC4507bis session ticket support. This option has no effect if TLSv1.3
+is negotiated. See B<-num_tickets>.
+
+=item B<-num_tickets>
+
+Control the number of tickets that will be sent to the client after a full
+handshake in TLSv1.3. The default number of tickets is 2. This option does not
+affect the number of tickets sent after a resumption handshake.
 
 =item B<-serverpref>
 

doc/man3/SSL_CTX_set_num_tickets.pod

@@ -20,10 +20,10 @@ SSL_CTX_get_num_tickets
 =head1 DESCRIPTION
 
 SSL_CTX_set_num_tickets() and SSL_set_num_tickets() can be called for a server
-application and set the number of session tickets that will be sent to the
-client after a full handshake. Set the desired value (which could be 0) in the
-B<num_tickets> argument. Typically these functions should be called before the
-start of the handshake.
+application and set the number of TLSv1.3 session tickets that will be sent to
+the client after a full handshake. Set the desired value (which could be 0) in
+the B<num_tickets> argument. Typically these functions should be called before
+the start of the handshake.
 
 The default number of tickets is 2; the default number of tickets sent following
 a resumption handshake is 1 but this cannot be changed using these functions.