Move freebsd-update.conf to usr.sbin/freebsd-update.

This is prep for pkgbase so that config files are tagged as such.

Approved by:	will (mentor)
Differential Revision:	https://reviews.freebsd.org/D16556

etc/Makefile

@@ -74,10 +74,6 @@ BIN1+= amd.map
 BIN1+=	auto_master
 .endif
 
-.if ${MK_FREEBSD_UPDATE} != "no"
-BIN1+= freebsd-update.conf
-.endif
-
 .if ${MK_FTP} != "no"
 BIN1+= ftpusers
 .endif

usr.sbin/freebsd-update/Makefile

@@ -1,5 +1,6 @@
 # $FreeBSD$
 
+CONFS=	freebsd-update.conf
 SCRIPTS=freebsd-update.sh
 MAN=	freebsd-update.8