s3:secrets_schannel: revert to using version 1

s3:secrets_schannel: revert to using version 1

It doesn't really matter if the entries
have invalid context in it. Older versions of samba
refuse to open the file if the version doesn't match.

If we can't parse individual records, we'll fail schannel binds,
but the clients are supposed to reestablish the netlogon secure channel
by doing ServerReqChallenge/ServerAuthenticate* again. This
will just overwrite the old record.

metze