DE170: fix notifications for nova_conf

nova_conf lwrp currently encapsulates two templates; services should
therefore subscribe the lwrp and not one of its embedded resources.
for chef 11, `use_inline_resources' is required for this to work (to
notify top-level resources). also removed embedded `log' resource as it
unconditionally marks the lwr as changed every time.
Merge pull request #279 from invsblduck/DE170_fix_nova_conf_notifies

DE170: fix notifications for nova_conf