Fix global scoped references for vars from site.pp

Fuel-lib's vars from top scope (site.pp) aren't top scoped
at fuel-web, thus, need to be passed to classes via its own vars

Signed-off-by: Bogdan Dobrelya <bogdando@mail.ru>
Fix logging class at bootstrab to rfc3339 timestamps

Signed-off-by: Bogdan Dobrelya <bogdando@mail.ru>
Fix verbose/debug/syslog options

- Debug option should be passed to openstack::logging class
- Verbose & debug options must be configured at site.pp and cluster_*.pp as well.
- Debug == verbose == false is normal case
  (syslog_log_level would be used then to filter messages by its level)
- Both boolean or string values should be accepted and passed as boolean class varaibles
- Fix verbose, debug, syslog facilities and level for swift
  Those options should be passed to openstack & swift classes
  to control debug/verbose mode and syslog settings as well

Signed-off-by: Bogdan Dobrelya <bogdando@mail.ru>
Add missed corosync and syslog log to rotation plans

- Corosync does not provide log rotation after have been installed,
thus rotation should be provided by logging class as well.
- /var/log/syslog was initially added to size based rotaion plan (20-fuel.conf) only.
  Should be added to time based rotation plan (10-fuel.conf) as well.