Don't fetch DNSKEY when fuzzing resolver

(cherry picked from commit cb3208aa)
7 jobs for XX-dont-fetch-keys-when-fuzzing-v9_12 in 6 minutes and 16 seconds (queued for 3 seconds)
Status Job ID Name Coverage
  Precheck
passed #16998
amd64 docker linux
precheck:debian:sid:amd64

00:00:11

 
  Build
passed #16999
amd64 docker linux
build:debian:sid:amd64

00:01:20

passed #17000
i386 docker linux
build:debian:sid:i386

00:01:24

 
  Test
passed #17003
amd64 docker linux
systemtest:debian:sid:amd64

00:04:39

passed #17004
i386 docker linux
systemtest:debian:sid:i386

00:04:36

passed #17001
amd64 docker linux
unittest:debian:sid:amd64

00:00:46

passed #17002
i386 docker linux
unittest:debian:sid:i386

00:00:46