Use anchors instead of literal blocks in .gitlab-ci.yml

Anchor lets the user see the full command logged in GitLab CI:

    ${CONFIGURE} --disable-maintainer-mode --enable-developer ...

Instead of a folded multi-line when literal block is used:

    ${CONFIGURE} \ # collapsed multi-line command
74 jobs for !4742 with mnowak/replace-literal-blocks-with-anchors in 38 minutes and 32 seconds (queued for 9 seconds)
latest detached
Status Job ID Name Coverage
  Autoconf
passed #1525472
amd64 linux
autoreconf

00:00:15

 
  Precheck
passed #1525474
amd64 linux
clang-format

00:00:17

passed #1525475
amd64 linux
coccinelle

00:03:46

passed #1529128
amd64 linux
danger

00:00:15

passed #1525473
amd64 linux
misc

00:00:21

passed #1525477
amd64 linux
tarball-create

00:01:31

passed #1525476
amd64 linux
danger

00:00:16

 
  Build
passed #1525489
amd64 linux
clang:asan

00:02:05

passed #1525493
amd64 linux
clang:buster:amd64

00:01:00

passed #1525496
amd64 libvirt
clang:freebsd11:amd64

00:01:19

passed #1525497
amd64 libvirt
clang:freebsd12:amd64

00:01:14

passed #1525498
amd64 libvirt
clang:openbsd:amd64

00:02:35

passed #1525491
amd64 linux
clang:tsan

00:01:07

passed #1525478
amd64 linux
gcc:alpine3.13:amd64

00:01:12

passed #1525488
amd64 linux
gcc:asan

00:01:41

passed #1525482
amd64 linux
gcc:buster:amd64

00:00:42

passed #1525479
amd64 linux
gcc:centos7:amd64

00:00:54

passed #1525480
amd64 linux
gcc:centos8:amd64

00:00:55

passed #1525487
amd64 linux
gcc:focal:amd64

00:01:06

passed #1525492
amd64 linux
gcc:mutexatomics

00:00:58

passed #1525484
amd64 linux
gcc:out-of-tree

00:00:56

passed #1525483
amd64 linux
gcc:sid:amd64

00:01:20

passed #1525494
amd64 linux
gcc:softhsm2.4

00:00:51

passed #1525495
amd64 linux
gcc:softhsm2.6

00:00:56

passed #1525481
amd64 linux
gcc:stretch:amd64

00:01:12

passed #1525490
amd64 linux
gcc:tsan

00:01:06

passed #1525485
amd64 linux
gcc:tumbleweed:amd64

00:00:49

passed #1525486
amd64 linux
gcc:xenial:amd64

00:01:01

passed #1525499
amd64 windows
msvc:windows:amd64

00:00:51

 
  Unit
passed #1525510
amd64 linux
unit:clang:asan

00:01:32

passed #1525514
amd64 linux
unit:clang:buster:amd64

00:01:15

passed #1525517
amd64 libvirt
unit:clang:freebsd11:amd64

00:01:47

canceled #1525518
amd64 libvirt
unit:clang:freebsd12:amd64

00:36:37

passed #1525519
amd64 libvirt
unit:clang:openbsd:amd64

00:03:15

passed #1525512
amd64 linux
unit:clang:tsan

00:03:21

passed #1525500
amd64 linux
unit:gcc:alpine3.13:amd64

00:01:13

passed #1525509
amd64 linux
unit:gcc:asan

00:01:33

passed #1525504
amd64 linux
unit:gcc:buster:amd64

00:02:10

passed #1525501
amd64 linux
unit:gcc:centos7:amd64

00:01:13

passed #1525502
amd64 linux
unit:gcc:centos8:amd64

00:01:26

passed #1525508
amd64 linux
unit:gcc:focal:amd64

00:01:13

passed #1525513
amd64 linux
unit:gcc:mutexatomics

00:01:17

passed #1525505
amd64 linux
unit:gcc:sid:amd64

00:01:09

passed #1525515
amd64 linux
unit:gcc:softhsm2.4

00:01:16

passed #1525516
amd64 linux
unit:gcc:softhsm2.6

00:01:18

passed #1525503
amd64 linux
unit:gcc:stretch:amd64

00:01:15

passed #1525511
amd64 linux
unit:gcc:tsan

00:04:08

passed #1525506
amd64 linux
unit:gcc:tumbleweed:amd64

00:01:22

passed #1525507
amd64 linux
unit:gcc:xenial:amd64

00:01:19

 
  System
failed #1525530
amd64 linux
system:clang:asan

00:13:49

passed #1525534
amd64 linux
system:clang:buster:amd64

00:12:11

passed #1525537
amd64 libvirt
system:clang:freebsd11:amd64

00:12:42

passed #1525538
amd64 libvirt
system:clang:freebsd12:amd64

00:12:10

failed #1525532
amd64 linux allowed to fail
system:clang:tsan

00:16:07

passed #1525520
amd64 linux
system:gcc:alpine3.13:amd64

00:12:41

passed #1525529
amd64 linux
system:gcc:asan

00:13:43

passed #1525524
amd64 linux
system:gcc:buster:amd64

00:13:21

passed #1525521
amd64 linux
system:gcc:centos7:amd64

00:12:25

passed #1525522
amd64 linux
system:gcc:centos8:amd64

00:13:20

failed #1525528
amd64 linux
system:gcc:focal:amd64

00:13:14

passed #1525533
amd64 linux
system:gcc:mutexatomics

00:12:27

passed #1525525
amd64 linux
system:gcc:sid:amd64

00:12:15

passed #1525535
amd64 linux
system:gcc:softhsm2.4

00:12:20

passed #1525536
amd64 linux
system:gcc:softhsm2.6

00:12:24

passed #1525523
amd64 linux
system:gcc:stretch:amd64

00:11:35

failed #1525531
amd64 linux allowed to fail
system:gcc:tsan

00:16:41

passed #1525526
amd64 linux
system:gcc:tumbleweed:amd64

00:11:56

passed #1525527
amd64 linux
system:gcc:xenial:amd64

00:11:32

 
  Docs
passed #1525539
amd64 linux
docs

00:00:55

 
  Postcheck
passed #1525543
amd64 linux
cppcheck

00:00:52

passed #1525540
amd64 linux
flake8

00:00:22

passed #1525544
amd64 linux
gcov

00:00:33

76.0%
passed #1525541
amd64 linux
pylint

00:00:26

passed #1525542
amd64 linux
scan-build

00:04:18

 
Name Stage Failure
failed
system:gcc:tsan System
FAIL pipelined (exit status: 1)

$ find bin -name 'tsan.*' -exec python3 util/parse_tsan.py {} \;
Uploading artifacts for failed job
Uploading artifacts...
untracked: found 1724 files

Uploading artifacts as "archive" to coordinator... ok
id=1525531 responseStatus=201 Created token=YzEMhEWb
Cleaning up file based variables
ERROR: Job failed: exit code 1
failed
system:clang:tsan System
FAIL pipelined (exit status: 1)

$ find bin -name 'tsan.*' -exec python3 util/parse_tsan.py {} \;
Uploading artifacts for failed job
Uploading artifacts...
untracked: found 1744 files

Uploading artifacts as "archive" to coordinator... ok
id=1525532 responseStatus=201 Created token=2nx6siYz
Cleaning up file based variables
ERROR: Job failed: exit code 1
failed
system:clang:asan System
FAIL kasp (exit status: 1)

$ test -n "${OUT_OF_TREE_WORKSPACE}" && mv "${OUT_OF_TREE_WORKSPACE}" "${CI_PROJECT_DIR}"
Uploading artifacts for failed job
Uploading artifacts...
untracked: found 5025 files

Uploading artifacts as "archive" to coordinator... ok
id=1525530 responseStatus=201 Created token=F2skCxHk
Cleaning up file based variables
ERROR: Job failed: exit code 1
failed
system:gcc:focal:amd64 System
FAIL statistics (exit status: 1)

$ test -n "${OUT_OF_TREE_WORKSPACE}" && mv "${OUT_OF_TREE_WORKSPACE}" "${CI_PROJECT_DIR}"
Uploading artifacts for failed job
Uploading artifacts...
untracked: found 1629 files

Uploading artifacts as "archive" to coordinator... ok
id=1525528 responseStatus=201 Created token=U4de3HvW
Cleaning up file based variables
ERROR: Job failed: exit code 1