fails

Utils Edns

fixes #211

Conflicts:
	src/knot/server/zones.c

Zonefile loading fixes

Most is said in the commit.
I would have refactored zone-load more (especially the custom rrset lists could be standard ptrnode_t list from list.h) and a few other things,
also it should be named something like `zonefile.h` as we already have a `zone-load.h` file which is for zone loading in general and makes it confusing.
But I didnt, as @jkadlec made a lot of changes in the rrset->rrsigs and I suspect this would result in nasty collisions (like the rrset lists code).
So... this should be done after his branch is merge-able.

NSEC/NSEC3: Fixed wildcard expansion proofs and previous node lookup + tests

Most of it is written in the commit comments, it's still not pretty but at least it works for now.

- refactored the zone-loader a bit, as reading from zone file
  creates only contents and the zone is created separately
- refactored zone contents creating function, as it is always used in a
  way where an apex node is created and inserted into contents
- crash occured because created zone bound configuration and if parsing
  failed, the configuration was freed with the zone and also with the
  caller

cov#1165386

cov#1165387

cov#1168292

cov#1169882

cov#1165390

- new test for wildcard expansion leading to NXDOMAIN
- new test for wildcard expansion leading to NODATA

authoritative

- this is temporary, as looking up closest encloser and previous
  is not required (or doesn't make sense) in all situations
- zone search should always return lexicographically previous node
  and the proof code should look up the encloser or previous node
  should it be needed

- every RFC5155 state may have visited a wildcard in processing,
  therefore they need to be proven
- fixed duplicate NSEC wildcard proof in no data case

- previously parent was added for MISS state, not the wildcard child
- removed deprecated MISS masking after following CNAME chain, as
  names leading out of zone are handled correctly

Added test cases for this and previous commit.

Conflicts:
	src/libknot/nameserver/name-server.c