Default prometheus to false

[LaurenceJJones]

cs-firewall-bouncer/config/crowdsec-firewall-bouncer.yaml

Lines 55 to 56 in 5afbe52

	prometheus:
	enabled: true

Should we default to false to not potentially use a port for no reason if the user doesnt know. If they want to be able to get metrics then they can simply come in turn to true and restart service.

[mmetc]

done