eth0 link should be detected before the dhcp starts in the playbook - update wiki request

[fmatejic]

Hello,
iscp doesn't start if eth0 doesn't have a link (ethtool eth0 -> Link detected ), then ansible playbook fails on:

Nov 21 02:18:01 booterizer isc-dhcp-server[6050]: Starting ISC DHCPv4 server: dhcpdcheck syslog for diagnostics. ...
Nov 21 02:18:01 booterizer isc-dhcp-server[6070]: failed!
Nov 21 02:18:01 booterizer isc-dhcp-server[6071]: failed!
Nov 21 02:18:01 booterizer systemd[1]: isc-dhcp-server.service: Control process exited, code=exited, status=1/FAILURE

I have O2 directly connected via CAT5e and wlan0 configured for internet access.
Please update an instruction that eth0 should be connected with line up before play. I suppose to setup rpi before start O2 ;-)