Fixes #3900 - Change 'reload' of rsyslog into a 'restart' of rsyslog (as 'reload' does nothing on RHEL/CentOS)

Fixes #3900 - Change 'reload' of rsyslog into a 'restart' of rsyslog (as 'reload' does nothing on RHEL/CentOS)

See http://www.rudder-project.org/redmine/issues/3900