Add support for writing logs to /var/log/consul.log.
Add support for writing logs to /var/log/consul.log.

I am not sure how this was missed before. This change for sysvinit
writes the service logs out to /var/log/consul.log.

This should close #284 and close #290.

johnbellone/consul-cookbook,johnbellone/consul-cookbook,johnbellone/consul-cookbook