vzctl.spec: require attr package

It never occured to me that setfattr can not be available, but it happens:

 # vzctl create ...
 ...
 Performing postcreate actions
 /etc/vz/dists/scripts/postcreate.sh: line 119: setfattr: command not found
 ...

So, let's require it from spec file.

This is an addition to commit f537353.

Signed-off-by: Kir Kolyshkin <kir@openvz.org>
1 file changed