Fixed a critical bug in sys handler vservers support: it tried (and failed) to...

Fixed a critical bug in sys handler vservers support: it tried (and failed) to save packages list even if packages=no.

handlers/sys

@@ -95,6 +95,7 @@ fi
 # here we grab a list of the packages installed and removed.
 #
 
+if [ "$packages" == "yes" ]; then
    if [ $usevserver ]
    then
       for vserver in `ls $VROOTDIR | grep -E -v $nodpkg`
@@ -109,7 +110,7 @@ if [ "$packages" == "yes" ]; then
       debug "dpkg --get-selections > $packagesfile"
       dpkg --get-selections > $packagesfile
    fi
-
+fi
 
 ## PARTITIONS #############################