fix for npt

[lessfoobar]

fix for ntp server. This way when you set the ntp_server or the pool it doesn't still take no_ntp

[lessfoobar]

@t-woerner, @rjeffman could you guys have a look at this? Thanks in advance.

[rjeffman]

Although you change fixes the issue, I'm not a fan of ternary(), as I find it hard to read and understand what it does.

@lessfoobar, I'm somewhat drowning in other issues right now, and giving your PR a proper review is on my TODO list. I hope to be able to look at it in the next week or the other.

[lessfoobar]

okay, ping me up again when you have the time