After T5367 the remote syslog option is no longer working if TCP transport is defined.
This results in NO remote logging host beeing configured in rsyslogd.
## Reproduce
```
set system syslog host 10.5.0.20 facility all level 'all'
set system syslog host 10.5.0.20 port '10513'
set system syslog host 10.5.0.20 protocol 'tcp'
```
Results in (`Remote logging` section is empty)
```
cpo@LR2.wue3# cat /etc/rsyslog.d/00-vyos.conf
### Autogenerated by system_syslog.py ###
$ModLoad immark
$MarkMessagePeriod 1200
$PreserveFQDN on
$LocalHostName LR2.wue3.mybll.net
# We always log to /var/log/messages
$outchannel global,/var/log/messages,262144,/usr/sbin/logrotate /etc/logrotate.d/vyos-rsyslog
*.info;local7.debug :omfile:$global
# Console logging
*.emerg;mail.info /dev/console
# Remote logging
```