Wait more than 1 second for NSEC3 chain changes

One second may not be enough for an NSEC3 chain change triggered by an
UPDATE message to complete.  Wait up to 10 seconds when checking whether
a given NSEC3 chain change is complete in the "nsupdate" system test.
40 jobs for !1837 with michal/minor-nsupdate-system-test-tweaks in 17 minutes and 36 seconds (queued for 9 seconds)
detached
Status Job ID Name Coverage
  Precheck
passed #218982
amd64 linux
🐞:sid:amd64

00:00:13

passed #218981
amd64 linux
misc:sid:amd64

00:00:18

 
  Build
passed #218993
amd64 linux
asan:sid:amd64

00:02:24

passed #218994
amd64 linux
clang:stretch:amd64

00:01:22

passed #218995
i386 linux
clang:stretch:i386

00:02:03

passed #218983
amd64 linux
docs:sid:amd64

00:00:49

passed #218992
amd64 linux
gcc:bionic:amd64

00:01:26

passed #218984
amd64 linux
gcc:centos6:amd64

00:02:54

passed #218985
amd64 linux
gcc:centos7:amd64

00:03:04

passed #218990
amd64 linux
gcc:fedora29:amd64

00:03:14

passed #218986
amd64 linux
gcc:jessie:amd64

00:01:03

passed #218988
amd64 linux
gcc:sid:amd64

00:01:36

passed #218989
i386 linux
gcc:sid:i386

00:01:43

passed #218987
amd64 linux
gcc:stretch:amd64

00:01:51

passed #218991
amd64 linux
gcc:xenial:amd64

00:02:04

passed #218996
amd64 linux
pkcs11:sid:amd64

00:01:09

 
  Test
passed #219015
amd64 linux
system:asan:sid:amd64

00:08:44

passed #219013
amd64 linux
system:gcc:bionic:amd64

00:08:01

passed #218997
amd64 linux
system:gcc:centos6:amd64

00:06:33

passed #218999
amd64 linux
system:gcc:centos7:amd64

00:07:19

passed #219009
amd64 linux
system:gcc:fedora29:amd64

00:07:07

passed #219001
amd64 linux
system:gcc:jessie:amd64

00:07:52

passed #219101
amd64 linux
system:gcc:sid:amd64

00:06:50

passed #219007
i386 linux
system:gcc:sid:i386

00:07:55

passed #219003
amd64 linux
system:gcc:stretch:amd64

00:08:01

passed #219011
amd64 linux
system:gcc:xenial:amd64

00:07:55

passed #219018
amd64 linux
system:pkcs11:sid:amd64

00:08:02

passed #219016
amd64 linux
unit:asan:sid:amd64

00:00:49

passed #219017
amd64 linux
unit:clang:stretch:amd64

00:00:50

passed #219014
amd64 linux
unit:gcc:bionic:amd64

00:00:46

passed #218998
amd64 linux
unit:gcc:centos6:amd64

00:00:48

passed #219000
amd64 linux
unit:gcc:centos7:amd64

00:00:50

passed #219010
amd64 linux
unit:gcc:fedora29:amd64

00:00:49

passed #219002
amd64 linux
unit:gcc:jessie:amd64

00:00:29

passed #219006
amd64 linux
unit:gcc:sid:amd64

00:00:50

passed #219008
i386 linux
unit:gcc:sid:i386

00:00:45

passed #219004
amd64 linux
unit:gcc:stretch:amd64

00:00:46

passed #219012
amd64 linux
unit:gcc:xenial:amd64

00:00:49

passed #219019
amd64 linux
unit:pkcs11:sid:amd64

00:00:47

failed #219005
amd64 linux
system:gcc:sid:amd64

00:07:09