dns-root-data: improve determinism, clear key status

Nitpicks:
- The timestamps there were useless.
- The generator now switched the two keys; I don't know why.

I intentionally remove the comments like "state=1 [ ADDPEND ]".
The problem is that keys e.g. in ADDPEND state are *not* immediately
usable for validation - see RFC5011 for details.  I verified that Unbound
does disregard this on the format we and Debian use ATM, presumably due
to removing parts of the comments, but it would be confusing nevertheless.