filter out ":amd64" string when comparing new installed packages name (…

…dell#47)

because of some installed package have postfix ":amd64", it will
confuse the logic of commit "f352bd" for dell#28 and treat it as a failure.

Signed-off-by: Alex Tu <alex.tu@canonical.com>

late/scripts/chroot.sh

@@ -146,7 +146,8 @@ fi
 #check the packages installed or not
 if [ -f "$TARGET/tmp/apt-installed" ]; then
     mv $TARGET/tmp/apt-installed $TARGET/var/lib/ubiquity/dell-apt
-    grep -x -f $TARGET/var/lib/ubiquity/dell-apt $TARGET/var/lib/ubiquity/installed-packages > $TARGET/var/lib/ubiquity/dell_installed
+    sed 's/:amd64//g' $TARGET/var/lib/ubiquity/installed-packages > $TARGET/var/lib/ubiquity/installed-packages-filtered
+    grep -x -f $TARGET/var/lib/ubiquity/dell-apt $TARGET/var/lib/ubiquity/installed-packages-filtered > $TARGET/var/lib/ubiquity/dell_installed
     awk '{print $0}' $TARGET/var/lib/ubiquity/dell-apt $TARGET/var/lib/ubiquity/dell_installed |sort |uniq -u > $TARGET/var/lib/ubiquity/dell_uninstalled
 fi