.gitlab-ci.yml: retry for test-server-functional

We frequently have a "keyserver receive failed: No data" in querying a gpg key
7 jobs for feature-s/retry-test-server-functional in 10 minutes and 54 seconds (queued for 2 seconds)
latest
Status Job ID Name Coverage
  Test Tools
passed #824338
test_tools

00:00:09

 
  Test Quality
failed #824339
allowed to fail
code_quality

00:00:02

 
  Test Unit
passed #824340
web
test_server_unit

00:00:18

 
  Deploy Review
passed #824341
deploy_review_server

00:03:33

failed #824342
allowed to fail manual
stop_deploy_review_server

 
  Test Functional
passed #824343
docker x86_64
ff32-server-functional

00:06:53

passed #824344
docker x86_64
ff45-server-functional

00:06:10

 
Name Stage Failure
failed
stop_deploy_review_server Deploy Review There has been a missing dependency failure
No job log
failed
code_quality Test Quality
$ function propagate_env_vars() { # collapsed multi-line command
$ docker pull --quiet "$CODE_QUALITY_IMAGE"
unknown flag: --quiet
See 'docker pull --help'.
Uploading artifacts...
Runtime platform arch=386 os=linux pid=15600 revision=58272c27 version=12.7.0
WARNING: gl-code-quality-report.json: no matching files
ERROR: No files to upload
ERROR: Job failed: exit status 1