Merge pull request #38 from arkxu/java_start

get rid of computed_attributes, and better receipts
BUG-CF-000224. Added delay before retouching linux console message files
in case os timezone has not been initialized yet on 1st boot.
BUG-CF-000226. Removed output of application status file in
/etc/issue.d/volatile.d if no network is available. No longer required
since we are already outputting a different set of console message on
startup if no network is available.
BUG-ADMIN-000050. Another attempt to fix the timestamp issue of the
console message files on 1st boot.
FEATURE-CF-000034. Display a warning on the console login when there is
less than 4G RAM available.
FEATURE-CF-000031. Removed avahi/mdns from dns publisher.
BUG-CF-000231. Increase memory limit before restarting vcap components
as upgrades does causes cloud controller to consume significantly more
memory.
correct nginx 404 configuration