avahi: fix useradd race condition

avahi: fix useradd race condition

Avahi doesn't work at boot because of:

+ sh /OE/../rootfs/var/lib/opkg/info/avahi-daemon.preinst
Running useradd commands...
grep: /OE/../rootfs/etc/passwd: No such file or directory

That is due to:

Package: avahi-daemon
Version: 0.6.30-r9.0
 [..]
Depends: libavahi-core7 (>= 0.6.30), libdaemon0 (>= 0.14), libcap2 (>= 2.22), libavahi-common3 (>= 0.6.30), libdbus-1-3 (>= 1.4.12), sysvinit-pidof, libc6 (>= 2.12), libexpat1 (>= 2.0.1)

After this patch:

 Package: avahi-daemon
 Version: 0.6.30-r10.0
 [..]
 Depends: libavahi-core7 (>= 0.6.30), libdaemon0 (>= 0.14), libcap2 (>= 2.22), libavahi-common3 (>= 0.6.30), libdbus-1-3 (>= 1.4.12), sysvinit-pidof, libc6 (>= 2.12), shadow, libexpat1 (>= 2.0.1), base-passwd

This also changes ${PN}-daemon to avahi-daemon to be consistent with the PACKAGES/FILES lines below

Signed-off-by: Koen Kooi <koen@dominion.thruhere.net>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>