Add extended logging options.

There is a range of extended logging options in Openstack services that use
openstack.common.logger (Ceilometer, Cinder, Heat, Keystone, Nova). Adding
heat::logging to support them. This change is identical to
<https://review.openstack.org/#/c/113560/> but it applies to puppet-heat
instead of puppet-ceilometer.

No blueprint/spec, as discussed in the IRC meeting on 08-11-2014.

Change-Id: Ia120b799d676e516d8e593088f93d44891c20cbd