attempt to fix/debug success_command problems

customize.sh

@@ -22,15 +22,18 @@ cat >> ${ISO}/preseed/nilmdbuntu.seed <<"EOF"
 # Ubiquity doesn't actually use preseed/late_command, so we do it
 # in ubiquity/success_command (which needs things mounted)
 ubiquity ubiquity/success_command string \
+    echo "success_command running" >/target/var/log/installer/postinst.log; \
     for i in /dev /dev/pts /dev/shm /sys /sys/kernel/security /proc /cdrom; do \
         mount --bind $i target/$i; done; \
     sed -i -e 's/quiet splash//g' /target/etc/default/grub; \
-    chroot /target update-grub; \
+    chroot /target update-grub \
+        >>/target/var/log/installer/postinst.log 2>&1; \
+    rm -f /target/etc/ssh/ssh_host_*; \
+    chroot /target dpkg-reconfigure openssh-server \
+        >>/target/var/log/installer/postinst.log 2>&1; \
     for i in /dev/pts /dev/shm /dev /sys/kernel/security /sys /proc /cdrom; do \
         umount /target/$i; done; \
-    in-target dpkg-reconfigure openssh-server; \
-    in-target update-grub; \
-    echo "done"
+    echo "success_command done" >>/target/var/log/installer/postinst.log
 
 # Default user.  Ubiquity should let them change this
 d-i passwd/user-fullname string NILM User