tools/hotplug: remove 4 from default runlevel in xencommons

tools/hotplug: remove 4 from default runlevel in xencommons

LSB defines runlevel 4 as "reserved for local use, default is
normal/full multiuser"

The current behaviour of insserv in openSuSE 11.4 and SLES11SP2 is that
xencommons gets a symlink in /etc/init.d/rc4.d/ due to the 4 in the
Default-Start: line. As a result insserv will print a warning:

insserv: warning: current stop runlevel(s) (2 3 5) of script `xencommons' overwrites defaults (2 3 4 5).

Since the local admin is responsible to create all symlinks manually in
/etc/init.d/rc4.d/ the xencommons script should not automatically enable
itself in runlevel 4.

So, remove the 4 from Default-Start: line.

Note: This change will not automatically remove old/stale xencommon
symlinks in /etc/init.d/rc4.d/ during a package upgrade.

Signed-off-by: Olaf Hering <olaf@aepfle.de>
Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>