Update to 9.11.1_p1

• New DNSSEC Root Key
• License Change from ISC to MPL-2.0
• Security fixes: CVE-2017-3140 CVE-2017-3141

Add nsupdate binary which is needed for T1901 and fixes T3179

Full changelog can be found: https://kb.isc.org/article/AA-01499

Signed-off-by: Matthias Eliasson <matthias.eliasson@gmail.com>

Tested the commands: nslookup, dig, host and nsupdate. Did not find anything odd.
Man pages for all commands is also present.