Update config template files to Icehouse

The most important change is in the middleware pipeline for the proxy:
  - gatekeeper, container_sync and dlo are added:
    - gatekeeper got added to filter headers.
    - container_sync is a new middleware related to configuration of
      container sync. We could add a config file for container_sync
      (container-sync-realms.conf) but we didn't have any config for
      that before, so we should be fine.
    - dlo simply got split (like slo before)
  - tempurl is moved before slo and dlo, as suggested by the doc.
Restart services when config file change

The notifications were missing, for some reason.
Merge pull request #257 from dirkmueller/master

Fix syntax error in previous commit
Merge pull request #258 from vuntz/restart-services

Restart services when config file change
Merge pull request #256 from vuntz/icehouse-conf

Update config template files to Icehouse
Restart rsyslog after creating /etc/rsyslog.d/11-swift.conf

Otherwise, the file is simply not used.
Fix detection of rsyslog version

The backslashes used in the sed command were lost (due to them being
seen as escape backslashes by ruby, I guess).
Merge pull request #260 from vuntz/restart-syslog

Restart rsyslog after creating /etc/rsyslog.d/11-swift.conf
Enable rsync service on boot

We want it to start on boot, so that it's there even when chef-client
failed to start it for some reason.
Merge pull request #261 from vuntz/rsync-enabled

Enable rsync service on boot
Avoid to run into a crash when disk formatting fails

If there is a disk that can't be formatted, code would
crash as it expects a UUID to be returned. Simply try
formatting it again next time.