Fix the "dnssec" system test on Windows

Make sure carriage return characters are stripped from awk input to
enable the "dnssec" system test to pass on Windows.
73 jobs for !2902 with michal/fix-the-dnssec-system-test-on-windows in 12 seconds (queued for 4 seconds)
detached
Status Job ID Name Coverage
  Precheck
canceled #569033
amd64 linux
🐞:sid:amd64

00:00:11

canceled #569031
amd64 linux
autoreconf:sid:amd64

00:00:12

canceled #569032
amd64 linux
misc:sid:amd64

00:00:12

 
  Build
canceled #569048
amd64 linux
asan:sid:amd64

canceled #569055
amd64 freebsd
clang:freebsd11.3:amd64

canceled #569056
amd64 freebsd
clang:freebsd12.0:amd64

canceled #569057
amd64 openbsd
clang:openbsd6.5:amd64

canceled #569052
amd64 linux
clang:stretch:amd64

canceled #569053
i386 linux
clang:stretch:i386

canceled #569034
amd64 linux
gcc:alpine3.11:amd64

canceled #569047
amd64 linux
gcc:bionic:amd64

canceled #569040
amd64 linux
gcc:buster:amd64

canceled #569035
amd64 linux
gcc:centos6:amd64

canceled #569036
amd64 linux
gcc:centos7:amd64

canceled #569037
amd64 linux
gcc:centos8:amd64

canceled #569045
amd64 linux
gcc:fedora31:amd64

canceled #569038
amd64 linux
gcc:jessie:amd64

canceled #569041
amd64 linux
gcc:sid:amd64

canceled #569043
i386 linux
gcc:sid:i386

canceled #569039
amd64 linux
gcc:stretch:amd64

canceled #569044
amd64 linux
gcc:tumbleweed:amd64

canceled #569046
amd64 linux
gcc:xenial:amd64

canceled #569059
amd64 windows
msvc:windows:amd64

canceled #569051
amd64 linux
mutexatomics:sid:amd64

canceled #569058
amd64 linux
nolibtool:sid:amd64

canceled #569042
amd64 linux
oot:sid:amd64

canceled #569054
amd64 linux
pkcs11:sid:amd64

canceled #569050
amd64 linux
rwlock:sid:amd64

canceled #569049
amd64 linux
tsan:buster:amd64

 
  Unit
canceled #569073
amd64 linux
unit:asan:sid:amd64

canceled #569078
amd64 freebsd
unit:clang:freebsd11.3:amd64

canceled #569079
amd64 freebsd
unit:clang:freebsd12.0:amd64

canceled #569076
amd64 linux
unit:clang:stretch:amd64

canceled #569060
amd64 linux
unit:gcc:alpine3.11:amd64

canceled #569072
amd64 linux
unit:gcc:bionic:amd64

canceled #569066
amd64 linux
unit:gcc:buster:amd64

canceled #569061
amd64 linux
unit:gcc:centos6:amd64

canceled #569062
amd64 linux
unit:gcc:centos7:amd64

canceled #569063
amd64 linux
unit:gcc:centos8:amd64

canceled #569070
amd64 linux
unit:gcc:fedora31:amd64

canceled #569064
amd64 linux
unit:gcc:jessie:amd64

canceled #569067
amd64 linux
unit:gcc:sid:amd64

canceled #569068
i386 linux
unit:gcc:sid:i386

canceled #569065
amd64 linux
unit:gcc:stretch:amd64

canceled #569069
amd64 linux
unit:gcc:tumbleweed:amd64

canceled #569071
amd64 linux
unit:gcc:xenial:amd64

canceled #569080
amd64 linux
unit:nolibtool:sid:amd64

canceled #569077
amd64 linux
unit:pkcs11:sid:amd64

canceled #569075
amd64 linux
unit:rwlock:sid:amd64

canceled #569074
amd64 linux allowed to fail
unit:tsan:buster:amd64

 
  System
canceled #569094
amd64 linux
system:asan:sid:amd64

canceled #569098
amd64 freebsd
system:clang:freebsd11.3:amd64

canceled #569099
amd64 freebsd
system:clang:freebsd12.0:amd64

canceled #569081
amd64 linux
system:gcc:alpine3.11:amd64

canceled #569093
amd64 linux
system:gcc:bionic:amd64

canceled #569087
amd64 linux
system:gcc:buster:amd64

canceled #569082
amd64 linux
system:gcc:centos6:amd64

canceled #569083
amd64 linux
system:gcc:centos7:amd64

canceled #569084
amd64 linux
system:gcc:centos8:amd64

canceled #569091
amd64 linux
system:gcc:fedora31:amd64

canceled #569085
amd64 linux
system:gcc:jessie:amd64

canceled #569088
amd64 linux
system:gcc:sid:amd64

canceled #569089
i386 linux
system:gcc:sid:i386

canceled #569086
amd64 linux
system:gcc:stretch:amd64

canceled #569090
amd64 linux
system:gcc:tumbleweed:amd64

canceled #569092
amd64 linux
system:gcc:xenial:amd64

canceled #569100
amd64 linux
system:nolibtool:sid:amd64

canceled #569097
amd64 linux
system:pkcs11:sid:amd64

canceled #569096
amd64 linux
system:rwlock:sid:amd64

canceled #569095
amd64 linux allowed to fail
system:tsan:buster:amd64

 
  Docs
canceled #569101
amd64 linux
docs:sid:amd64

 
  Postcheck
canceled #569103
amd64 linux
cppcheck:gcc:sid:amd64

canceled #569102
amd64 linux
scan-build:buster:amd64