[mythtv-cmyth] ADDON announcement: Sending WOL

- Add new setting 'host_ether' to setup the host ethernet address
- Add po for new setting '30008'
- Try to send WOL while Event handler still disconnected (cf. RetryConnect)
[mythtv-cmyth] ADDON announcement: Sending WOL only on wake

- Add attribute to allow sending WOL
- Allow to send WOL when resuming on wake