Set autoboot delay to 5 seconds

Default is 10 seconds, so this will speed up boots/reboots a bit
switch to using /etc/rc.d/smartdc

me-freebsd now has a "smartdc" service which we enable rather than
having a rc.local file. me-freebsd now also configures NICs
dynamically. Entries (such as  for ifconfig_vtnet0) will be added at
boot.
Clean up /tmp/installscript when done
Merge branch 'unstable'