FS-10067: [mod_sofia] add update-refresher profile param and sip_update_refresher channel var to use update for session timers

src/mod/endpoints/mod_sofia/mod_sofia.h

@@ -308,6 +308,7 @@ typedef enum {
 	PFLAG_PROXY_MESSAGE,
 	PFLAG_FIRE_BYE_RESPONSE_EVENTS,
 	PFLAG_AUTO_INVITE_100,
+	PFLAG_UPDATE_REFRESHER,
 
 	/* No new flags below this line */
 	PFLAG_MAX
@@ -849,6 +850,7 @@ struct private_object {
 	sofia_cid_type_t cid_type;
 	uint32_t session_timeout;
 	enum nua_session_refresher session_refresher;
+	int update_refresher;
 	char **watch_headers;
 	char *respond_phrase;
 	int respond_code;