Add uv_wrap.h to libisctest_la_SOURCES

uv_wrap.h is included in tcp_test.c and udp_test.c and therefore should
be listed in lib/isc/tests/Makefile.am, otherwise unit test run from
distribution tarball fails to compile:

tcp_test.c:37:10: fatal error: uv_wrap.h: No such file or directory
 #include "uv_wrap.h"
          ^~~~~~~~~~~

udp_test.c:37:10: fatal error: uv_wrap.h: No such file or directory
 #include "uv_wrap.h"
          ^~~~~~~~~~~
81 jobs for 2327-error-uv_wrap-h-no-such-file-or-directory-on-unit-gcc-tarball-ci-job in 15 minutes and 6 seconds (queued for 12 seconds)
Status Job ID Name Coverage
  Autoconf
passed #1336584
amd64 linux
autoreconf

00:00:18

 
  Precheck
canceled #1336586
amd64 linux
clang-format

canceled #1336587
amd64 linux
coccinelle

canceled #1336585
amd64 linux
misc

passed #1336588
amd64 linux
tarball-create

00:01:17

 
  Build
canceled #1336602
amd64 linux
clang:asan

canceled #1336606
amd64 linux
clang:buster:amd64

canceled #1336609
amd64 libvirt
clang:freebsd11:amd64

canceled #1336610
amd64 libvirt
clang:freebsd12:amd64

canceled #1336611
amd64 libvirt
clang:openbsd:amd64

canceled #1336604
amd64 linux
clang:tsan

canceled #1336589
amd64 linux
gcc:alpine3.12:amd64

canceled #1336601
amd64 linux
gcc:asan

canceled #1336593
amd64 linux
gcc:buster:amd64

canceled #1336590
amd64 linux
gcc:centos7:amd64

canceled #1336591
amd64 linux
gcc:centos8:amd64

canceled #1336600
amd64 linux
gcc:focal:amd64

canceled #1336605
amd64 linux
gcc:mutexatomics

canceled #1336595
amd64 linux
gcc:out-of-tree

canceled #1336594
amd64 linux
gcc:sid:amd64

canceled #1336597
i386 linux
gcc:sid:i386

canceled #1336607
amd64 linux
gcc:softhsm2.4

canceled #1336608
amd64 linux
gcc:softhsm2.6

canceled #1336592
amd64 linux
gcc:stretch:amd64

passed #1336596
amd64 linux
gcc:tarball

00:00:59

canceled #1336603
amd64 linux
gcc:tsan

canceled #1336598
amd64 linux
gcc:tumbleweed:amd64

canceled #1336599
amd64 linux
gcc:xenial:amd64

canceled #1336613
amd64 windows
msvc-debug:windows:amd64

00:00:37

canceled #1336612
amd64 windows
msvc:windows:amd64

00:00:39

 
  Unit
skipped #1336626
amd64 linux
unit:clang:asan
skipped #1336630
amd64 linux
unit:clang:buster:amd64
skipped #1336633
amd64 libvirt
unit:clang:freebsd11:amd64
skipped #1336634
amd64 libvirt
unit:clang:freebsd12:amd64
skipped #1336635
amd64 libvirt
unit:clang:openbsd:amd64
skipped #1336628
amd64 linux
unit:clang:tsan
skipped #1336614
amd64 linux
unit:gcc:alpine3.12:amd64
skipped #1336625
amd64 linux
unit:gcc:asan
skipped #1336618
amd64 linux
unit:gcc:buster:amd64
skipped #1336615
amd64 linux
unit:gcc:centos7:amd64
skipped #1336616
amd64 linux
unit:gcc:centos8:amd64
skipped #1336624
amd64 linux
unit:gcc:focal:amd64
skipped #1336629
amd64 linux
unit:gcc:mutexatomics
skipped #1336619
amd64 linux
unit:gcc:sid:amd64
skipped #1336621
i386 linux
unit:gcc:sid:i386
skipped #1336631
amd64 linux
unit:gcc:softhsm2.4
skipped #1336632
amd64 linux
unit:gcc:softhsm2.6
skipped #1336617
amd64 linux
unit:gcc:stretch:amd64
passed #1336620
amd64 linux
unit:gcc:tarball

00:01:10

skipped #1336627
amd64 linux
unit:gcc:tsan
skipped #1336622
amd64 linux
unit:gcc:tumbleweed:amd64
skipped #1336623
amd64 linux
unit:gcc:xenial:amd64
 
  System
skipped #1336649
amd64 linux
system:clang:asan
skipped #1336653
amd64 linux
system:clang:buster:amd64
skipped #1336656
amd64 libvirt
system:clang:freebsd11:amd64
skipped #1336657
amd64 libvirt
system:clang:freebsd12:amd64
skipped #1336658
amd64 libvirt
system:clang:openbsd:amd64
skipped #1336651
amd64 linux allowed to fail
system:clang:tsan
skipped #1336636
amd64 linux
system:gcc:alpine3.12:amd64
skipped #1336648
amd64 linux
system:gcc:asan
skipped #1336640
amd64 linux
system:gcc:buster:amd64
skipped #1336637
amd64 linux
system:gcc:centos7:amd64
skipped #1336638
amd64 linux
system:gcc:centos8:amd64
skipped #1336647
amd64 linux
system:gcc:focal:amd64
skipped #1336652
amd64 linux
system:gcc:mutexatomics
skipped #1336642
amd64 linux
system:gcc:out-of-tree
skipped #1336641
amd64 linux
system:gcc:sid:amd64
skipped #1336644
i386 linux
system:gcc:sid:i386
skipped #1336654
amd64 linux
system:gcc:softhsm2.4
skipped #1336655
amd64 linux
system:gcc:softhsm2.6
skipped #1336639
amd64 linux
system:gcc:stretch:amd64
passed #1336643
amd64 linux
system:gcc:tarball

00:11:50

skipped #1336650
amd64 linux allowed to fail
system:gcc:tsan
skipped #1336645
amd64 linux
system:gcc:tumbleweed:amd64
skipped #1336646
amd64 linux
system:gcc:xenial:amd64
skipped #1336660
amd64 windows
system:msvc-debug:windows:amd64
skipped #1336659
amd64 windows
system:msvc:windows:amd64
 
  Docs
canceled #1336661
amd64 linux
docs

 
  Postcheck
canceled #1336663
amd64 linux
cppcheck

skipped #1336664
amd64 linux
gcov
canceled #1336662
amd64 linux
scan-build