Initalize TZ environment variable before calling dns_test_begin in dnstap_test.

(cherry picked from commit 1cf12540)
15 jobs for 624-lib-dns-dnstap_test-totext-does-not-work-well-with-softhsm-pkcs11-v9_12 in 7 minutes and 19 seconds (queued for 5 seconds)
Status Job ID Name Coverage
  Precheck
passed precheck:debian:sid:amd64 #77885
amd64 docker linux

00:00:17

 
  Build
passed build:centos:centos6:amd64 #77886
amd64 docker linux

00:02:05

passed build:centos:centos7:amd64 #77887
amd64 docker linux

00:02:14

passed build:debian:sid:amd64 #77888
amd64 docker linux

00:01:33

passed build:debian:sid:i386 #77889
i386 docker linux

00:01:34

 
  Test
passed docs:debian:sid:amd64 #77890
amd64 docker linux

00:00:52

passed install:debian:sid:amd64 #77899
amd64 docker linux

00:02:59

passed systemtest:centos:centos6:amd64 #77895
amd64 docker linux

00:04:44

passed systemtest:centos:centos7:amd64 #77896
amd64 docker linux

00:04:42

passed systemtest:debian:sid:amd64 #77897
amd64 docker linux

00:04:47

passed systemtest:debian:sid:i386 #77898
i386 docker linux

00:04:42

passed unittest:centos:centos6:amd64 #77891
amd64 docker linux

00:00:50

passed unittest:centos:centos7:amd64 #77892
amd64 docker linux

00:01:05

passed unittest:debian:sid:amd64 #77893
amd64 docker linux

00:01:01

passed unittest:debian:sid:i386 #77894
i386 docker linux

00:00:57