Re-split ciGroups after pipeline rollout (elastic#46375)

* Re-split ciGroups after pipeline rollout

Revert "Revert "Revert "Revert "Revert "[ci] compress jobs for CI stab… (elastic#45454)"

This reverts commit 9a109f2.

Revert "set IS_PIPELINE_JOB in intake jobs (elastic#45850)"

This reverts commit b1a01ef.

* Split one of the slow test suites up to try to make overall CI faster

* Disable visualRegression groups, they are being handled in other work

* Revert "Split one of the slow test suites up to try to make overall CI faster"

This reverts commit 1213239.

* Move some different xpack ciGroup8 suites around

# Conflicts:
#	.ci/jobs.yml
#	.ci/run.sh
#	Jenkinsfile
#	test/functional/apps/visualize/index.ts
#	test/mocha_decorations.d.ts
#	test/scripts/jenkins_firefox_smoke.sh
#	test/scripts/jenkins_xpack_ci_group.sh
#	test/scripts/jenkins_xpack_firefox_smoke.sh
#	x-pack/test/alerting_api_integration/security_and_spaces/tests/index.ts
#	x-pack/test/alerting_api_integration/spaces_only/tests/index.ts
#	x-pack/test/api_integration/apis/index.js
#	x-pack/test/api_integration/apis/spaces/index.ts
#	x-pack/test/functional/apps/apm/index.ts
#	x-pack/test/functional/apps/dashboard_mode/index.js
#	x-pack/test/functional/apps/index_lifecycle_management/index.ts
#	x-pack/test/functional/apps/infra/index.ts
#	x-pack/test/functional/apps/license_management/index.ts
#	x-pack/test/functional/apps/maps/index.js
#	x-pack/test/functional/apps/uptime/index.ts
#	x-pack/test/kerberos_api_integration/apis/index.ts
#	x-pack/test/oidc_api_integration/apis/authorization_code_flow/index.js
#	x-pack/test/oidc_api_integration/apis/implicit_flow/index.ts
#	x-pack/test/pki_api_integration/apis/index.ts
#	x-pack/test/saved_object_api_integration/security_only/apis/index.ts
#	x-pack/test/spaces_api_integration/security_and_spaces/apis/index.ts
#	x-pack/test/ui_capabilities/security_and_spaces/tests/index.ts
#	x-pack/test/ui_capabilities/security_only/tests/index.ts
#	x-pack/test/ui_capabilities/spaces_only/tests/index.ts
#	x-pack/test/upgrade_assistant_integration/upgrade_assistant/index.js
#	x-pack/test/visual_regression/tests/maps/index.js

Jenkinsfile

@@ -101,6 +101,7 @@ def getPostBuildWorker(name, closure) {
       "TEST_KIBANA_URL=http://elastic:changeme@localhost:${kibanaPort}",
       "TEST_ES_URL=http://elastic:changeme@localhost:${esPort}",
       "TEST_ES_TRANSPORT_PORT=${esTransportPort}",
+      "IS_PIPELINE_JOB=1",
     ]) {
       closure()
     }
@@ -163,7 +164,6 @@ def jobRunner(label, closure) {
 
     withEnv([
       "CI=true",
-      "IS_PIPELINE_JOB=1",
       "HOME=${env.JENKINS_HOME}",
       "PR_SOURCE_BRANCH=${env.ghprbSourceBranch}",
       "PR_TARGET_BRANCH=${env.ghprbTargetBranch}",