K8s new tests scenarios (#6451)

## Summary of changes

New K8s scenarios have been added to system-tests. These scenarios are
managed by the one pipeline.
Change the k8s lib injection tests jobs on gitlab

## Reason for change
New K8s scenarios have been added to system-tests. We need to adapt the
tracer pipeline
## Implementation details
Only added a test scenarios matrix for k8s lib injection tests. gitlab.
## Test coverage

## Other details
<!-- Fixes #{issue} -->

<!-- ⚠️ Note: where possible, please obtain 2 approvals prior to
merging. Unless CODEOWNERS specifies otherwise, for external teams it is
typically best to have one review from a team member, and one review
from apm-dotnet. Trivial changes do not require 2 reviews. -->

.gitlab-ci.yml

@@ -126,7 +126,9 @@ onboarding_tests_installer:
 onboarding_tests_k8s_injection:
   parallel:
     matrix:
-      - WEBLOG_VARIANT: dd-lib-dotnet-init-test-app
+      - WEBLOG_VARIANT: [dd-lib-dotnet-init-test-app]
+        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','7.57.0','7.59.0']
 
 deploy_to_reliability_env:
   rules: