chore(ci): ssi tests onepipeline [backport 3.2] (#12850)

Backport ab6799a from #12668 to 3.2.

Integrate the latest changes on one-pipeline.
Configure and run the system-tests pipeline (only for ssi tests)
Simplify the pipeline to run the system-tests ssi tests

## Checklist
- [x] PR author has checked that all the criteria below are met
- The PR description includes an overview of the change
- The PR description articulates the motivation for the change
- The change includes tests OR the PR description describes a testing
strategy
- The PR description notes risks associated with the change, if any
- Newly-added code is easy to change
- The change follows the [library release note
guidelines](https://ddtrace.readthedocs.io/en/stable/releasenotes.html)
- The change includes or references documentation updates if necessary
- Backport labels are set (if
[applicable](https://ddtrace.readthedocs.io/en/latest/contributing.html#backporting))

## Reviewer Checklist
- [x] Reviewer has checked that all the criteria below are met 
- Title is accurate
- All changes are related to the pull request's stated goal
- Avoids breaking
[API](https://ddtrace.readthedocs.io/en/stable/versioning.html#interfaces)
changes
- Testing strategy adequately addresses listed risks
- Newly-added code is easy to change
- Release note makes sense to a user of the library
- If necessary, author has acknowledged and discussed the performance
implications of this PR as reported in the benchmarks PR comment
- Backport labels are set in a manner that is consistent with the
[release branch maintenance
policy](https://ddtrace.readthedocs.io/en/latest/contributing.html#backporting)

Co-authored-by: Roberto Montero <[email protected]>

Author: github-actions[bot]

.gitlab-ci.yml

@@ -135,27 +135,10 @@ publish-lib-init-pinned-tags:
     - job: generate-lib-init-pinned-tag-values
       artifacts: true
 
-onboarding_tests_installer:
-  parallel:
-    matrix:
-      - ONBOARDING_FILTER_WEBLOG: [test-app-python,test-app-python-container,test-app-python-alpine]
-        SCENARIO: [ SIMPLE_INSTALLER_AUTO_INJECTION, SIMPLE_AUTO_INJECTION_PROFILING ]
-
-onboarding_tests_k8s_injection:
-  parallel:
-    matrix:
-      - WEBLOG_VARIANT: [dd-lib-python-init-test-django, ]
-        SCENARIO: [K8S_LIB_INJECTION, K8S_LIB_INJECTION_UDS, K8S_LIB_INJECTION_NO_AC, K8S_LIB_INJECTION_NO_AC_UDS, K8S_LIB_INJECTION_PROFILING_DISABLED, K8S_LIB_INJECTION_PROFILING_ENABLED, K8S_LIB_INJECTION_PROFILING_OVERRIDE]
-        K8S_CLUSTER_VERSION: ['7.56.2', '7.59.0']
-
-      - WEBLOG_VARIANT: [dd-lib-python-init-test-django-gunicorn, dd-lib-python-init-test-django-gunicorn-alpine, dd-lib-python-init-test-django-unsupported-package-force, dd-lib-python-init-test-django-uvicorn, dd-lib-python-init-test-protobuf-old ]
-        SCENARIO: [K8S_LIB_INJECTION, K8S_LIB_INJECTION_PROFILING_ENABLED]
-        K8S_CLUSTER_VERSION: ['7.56.2', '7.59.0']
-
-      - WEBLOG_VARIANT: [dd-lib-python-init-test-django-preinstalled]
-        SCENARIO: [K8S_LIB_INJECTION, K8S_LIB_INJECTION_UDS, K8S_LIB_INJECTION_NO_AC, K8S_LIB_INJECTION_NO_AC_UDS]
-        K8S_CLUSTER_VERSION: ['7.56.2', '7.59.0']
-
+configure_system_tests:
+  variables:
+    SYSTEM_TESTS_SCENARIOS_GROUPS: "simple_onboarding,simple_onboarding_profiling,docker-ssi,lib-injection"
+    
 deploy_to_reliability_env:
   needs: []