Merge branch '4403-do-not-run-geo-specs-in-non-geo-jobs' into 'master'

Don't run Geo specs in non-Geo jobs, and create a new job to run Geo specs without FDW

Closes #4403

See merge request gitlab-org/gitlab-ee!4021

.gitlab-ci.yml

@@ -117,7 +117,7 @@ stages:
     - '[[ -f $FLAKY_RSPEC_REPORT_PATH ]] || echo "{}" > ${FLAKY_RSPEC_REPORT_PATH}'
     - '[[ -f $NEW_FLAKY_RSPEC_REPORT_PATH ]] || echo "{}" > ${NEW_FLAKY_RSPEC_REPORT_PATH}'
     - scripts/gitaly-test-spawn
-    - knapsack rspec "--color --format documentation"
+    - knapsack rspec "--color --format documentation --tag ~geo"
   artifacts:
     expire_in: 31d
     when: always