atftpd: update init script to use procd and publish service

[mhusaam]

• update init script to use procd
• announce tftp service over mdns

Signed-off-by: Mohd Husaam Mehdi [email protected]

[feckert]

Can you please split this up in two commits.

• Switching the init to procd
• Adding mdns

Then we could better port the procd init change to the other stable branches if we want. These are two changes that should not be combined in one commit.

We should make the mdns handling configurable, just like we do with the dropbear. Not everyone wants to have mdns.

[mhusaam]

Thank you for reviewing, your comments have been addressed. @feckert, kindly check again.