update rsyslog-server role to fix massive output to /var/log and add omfile

current version just sets imtcp/udp and loads logstash output module if configured by parameter, but not disable standard output to /var/log, which will result to write massive outputs to /var/log.

• add ruleset to input lines
• add ruleset to existing logstash template
• add omfile template with dynaFile as template like following

$template omfile-name,"/tmp/%$year%/%$month%%$day%/%hostname%/%syslogfacility-text%.log"
action(type="omfile" dynaFile="omfile-name")