rgy.py: make log_(data|metadata) configurable

The log_data and log_metadata are made configurable
via the YAML file and default to false
(meaning neither data nor metadata operations are
logged).

Signed-off-by: Joe Buck <jbbuck@gmail.com>
Reviewed-by: Josh Durgin <josh.durgin@inktank.com>
rgw: create system users with the --system flag

without this they have no special permissions

Signed-off-by: Josh Durgin <josh.durgin@inktank.com>
rgw: don't make domain_root pool the same as zone root

These are supposed to be separate pools.

Signed-off-by: Josh Durgin <josh.durgin@inktank.com>
radosgw-agent: move zone extraction to helper

This will be useful for other tasks.

Signed-off-by: Josh Durgin <josh.durgin@inktank.com>
radosgw-agent: get verbose logs from the agent

This makes it a lot easier to debug.

Signed-off-by: Josh Durgin <josh.durgin@inktank.com>
rgw: add log settings to example config

Signed-off-by: Josh Durgin <josh.durgin@inktank.com>