logging: configuration from configmaps etc
logging: configuration from configmaps etc

Because we use configmaps to configure the deployer as well as fluentd
and curator, this document has been refactored a fair amount.

Differences between origin and enterprise 3.3 have largely been
reconciled.
Newly-available parameters have been described.
Granting permissions to SAs has been simplified.
Wording has been adjusted in various places.

xiaoping378/openshift-docs,xiaoping378/openshift-docs,xiaoping378/openshift-docs