remove re-signing race when testing dnskey-sig-validity

(cherry picked from commit 7288d321)
Status Job ID Name Coverage
  Precheck
passed #31301
amd64 docker linux
precheck:debian:sid:amd64

00:00:13

 
  Build
passed #31302
amd64 docker linux
build:centos:centos6:amd64

00:02:11

passed #31303
amd64 docker linux
build:centos:centos7:amd64

00:02:19

passed #31304
amd64 docker linux
build:debian:sid:amd64

00:02:02

passed #31305
i386 docker linux
build:debian:sid:i386

00:02:07

 
  Test
passed #31310
amd64 docker linux
systemtest:centos:centos6:amd64

00:04:36

passed #31311
amd64 docker linux
systemtest:centos:centos7:amd64

00:04:47

passed #31312
amd64 docker linux
systemtest:debian:sid:amd64

00:04:45

passed #31313
i386 docker linux
systemtest:debian:sid:i386

00:04:59

passed #31306
amd64 docker linux
unittest:centos:centos6:amd64

00:01:15

passed #31307
amd64 docker linux
unittest:centos:centos7:amd64

00:01:17

passed #31308
amd64 docker linux
unittest:debian:sid:amd64

00:01:14

passed #31309
i386 docker linux
unittest:debian:sid:i386

00:01:02