Update 4.2 - 4.3 extension upgrade script

repmgr--4.2--4.3.sql

@@ -1,4 +1,12 @@
 -- complain if script is sourced in psql, rather than via CREATE EXTENSION
 \echo Use "CREATE EXTENSION repmgr" to load this file. \quit
 
--- XXX add new functions here
+CREATE FUNCTION set_primary_last_seen()
+  RETURNS VOID
+  AS 'MODULE_PATHNAME', 'set_primary_last_seen'
+  LANGUAGE C STRICT;
+
+CREATE FUNCTION get_primary_last_seen()
+  RETURNS INT
+  AS 'MODULE_PATHNAME', 'get_primary_last_seen'
+  LANGUAGE C STRICT;