Add top-level namespace to Usage Overview panel

What does this MR do and why?

Adds a new element with the top-level namespace's full name, type, visibility level icon and avatar to the Usage Overview panel on the Value Stream Dashboard.

MR acceptance checklist

Please evaluate this MR against the MR acceptance checklist. It helps you analyze changes to reduce risks in quality, performance, reliability, security, and maintainability.

Screenshots or screen recordings

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Before	After

How to set up and validate locally

1. Please make sure you have a GitLab Ultimate license.
2. Feature.enable(:group_analytics_dashboard_dynamic_vsd)
3. Create a new (or choose an existing) top-level group and invoke the seed script: GROUP_ID=<group-id> FILTER=vsd_overview_counts SEED_VSD_COUNTS=1 bundle exec rake db:seed_fu
4. Navigate to the group above and, from the left sidebar, click the Analyze > Analytics dashboards link
5. The group dashboard list should appear, select Value Stream Dashboard
6. Verify that the top-level namespace and related elements appear in the Usage overview panel.

Related to #439699 (closed)

.gitlab/ci/test-on-gdk/main.gitlab-ci.yml

@@ -78,8 +78,8 @@ include:
     QA_INTERCEPT_REQUESTS: "false"
     QA_SUITE_STATUS_ENV_FILE: "$CI_PROJECT_DIR/suite_status.env"
     QA_DOCKER_NETWORK: host
+    QA_DISABLE_RSPEC_RETRY: "true"
     GITLAB_QA_ADMIN_ACCESS_TOKEN: $QA_ADMIN_ACCESS_TOKEN
-    RSPEC_REPORT_OPTS: "--order random --force-color --format documentation --format RspecJunitFormatter --out tmp/rspec-${CI_JOB_ID}.xml --format QA::Support::JsonFormatter --out tmp/rspec-${CI_JOB_ID}.json  --format html --out tmp/rspec-${CI_JOB_ID}.htm"
     GDK_URL: http://gdk.test:3000
     FF_NETWORK_PER_BUILD: "true"
   before_script:
@@ -89,9 +89,17 @@ include:
     - cd qa && bundle config set --local without 'development' && bundle install
     - echo -e "\e[0Ksection_end:`date +%s`:install_gems\r\e[0K"
   script:
-    - export QA_COMMAND="bundle exec bin/qa ${QA_SCENARIO:=Test::Instance::All} $GDK_URL $GITLAB_QA_OPTS -- $QA_TESTS $QA_RSPEC_TAGS $RSPEC_REPORT_OPTS"
+    - export QA_COMMAND="bundle exec bin/qa ${QA_SCENARIO:=Test::Instance::All} $GDK_URL $GITLAB_QA_OPTS -- $QA_TESTS --order random --force-color --format documentation --format RspecJunitFormatter --out tmp/rspec-${CI_JOB_ID}-${QA_RSPEC_RETRIED:-false}.xml --format QA::Support::JsonFormatter --out tmp/rspec-${CI_JOB_ID}-${QA_RSPEC_RETRIED:-false}.json"
     - echo "Running - '$QA_COMMAND'"
-    - eval "$QA_COMMAND"
+    - |
+      if eval "$QA_COMMAND"; then
+        echo "Test run finished successfully"
+      else
+        export QA_RSPEC_RETRIED=true
+        export NO_KNAPSACK=true
+        echo "Initial test run failed, triggering retry of failed rspec tests"
+        eval "$QA_COMMAND --only-failures"
+      fi
   after_script:
     - !reference [.with-gdk-log, after_script]
     - !reference [.gitlab-qa-report, after_script]