Modify sofia profile to attempt to bind to the interface up to 3 tries with a 5 second wait between attempts.

Add new profile params bind-attempts and bind-attempt-interval to modify default behavior.
--NEEDSDOCS

src/mod/endpoints/mod_sofia/mod_sofia.h

@@ -716,6 +716,8 @@ struct sofia_profile {
 	int tcp_pingpong;
 	int tcp_ping2pong;
 	ka_type_t keepalive;
+	int bind_attempts;
+	int bind_attempt_interval;
 };