Fix traditional and high precision timestamps for rsyslog

Signed-off-by: Bogdan Dobrelya <bogdando@mail.ru>
Rsyslog high precision timestamps, date-rfc3339 as default

Show GMT and sharp timestamps including ms, which would allow to
distinct messages geographically and by service thread-workers.
Apply both for log server and clients.

Signed-off-by: Bogdan Dobrelya <bogdando@mail.ru>
Add assumption about rsyslog BM stage install

Signed-off-by: Bogdan Dobrelya <bogdando@mail.ru>
Fix bad traditional/high_precision timestamps

Signed-off-by: Bogdan Dobrelya <bogdando@mail.ru>
Merge branch 'feat_highstamps'

Conflicts:
	deployment/puppet/openstack/manifests/logging.pp

Signed-off-by: Bogdan Dobrelya <bogdando@mail.ru>