make nfs root dies on dracut setup in stretch build

[Thomas Lange]

>>>>> On Tue, 27 Jun 2017 06:59:48 -0700, Nat Sincheler <fai1107 at macrotex.net> said:

    > Thanks to Juri Grabowski and Justin Cattle for the suggestion to include 
    > curl: that took care of the issue.
If you update from an older FAI version, you should examine the diffs
of the old and new /etc/fai/NFSROOT. Often the new version is not
used, but still the old file.

-- 
regards Thomas