EE port  API Support for Kubernetes integration

Closes gitlab-ce#40473

See merge request gitlab-org/gitlab-ee!8994

Require Knative to be installed only on an RBAC kubernetes cluster

See merge request gitlab-org/gitlab-ce!23807

Fix broken master api_variables test

See merge request gitlab-org/gitlab-ce!24165

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[EE] Fix broken master api_variables test

Closes #9048

See merge request gitlab-org/gitlab-ee!9038

Merge branch '8891-table-headers-font-size-is-too-big-in-group-level-security-dashboard' into 'master'

Fix Security Dashboard Header fontsize

Closes #8891

See merge request gitlab-org/gitlab-ee!9011

Merge branch '4553-geo-hashed-storage-migration-failure-does-not-log-to-sentry-or-geo-log-well-ee' into 'master'

Backport of https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/8926

See merge request gitlab-org/gitlab-ce!24129

Overrides:
- optional_params_ee to set environment_scope
- create_cluster_user_params: To add environment_scope

Support new report syntax for common vulnerabilities (CE backport)

See merge request gitlab-org/gitlab-ce!23962

Support new syntax for common vulnerabilities

See merge request gitlab-org/gitlab-ee!8701

Update serverless extension to yml

See merge request gitlab-org/gitlab-ce!24163

Backport of https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/8926

Fixes broken link

See merge request gitlab-org/gitlab-ce!24161

Fix deprecation: returning false in Active Record and Active Model callbacks

See merge request gitlab-org/gitlab-ce!24134

fix border-radius for related issues

Closes #8963

See merge request gitlab-org/gitlab-ee!8958

This MR also removes other reports and uses one common set of fixtures
for all test types.

Add project code view permissions

See merge request gitlab-org/gitlab-ce!24158

Add project code view permissions

See merge request gitlab-org/gitlab-ee!9036

Don't ignore conflicts in db/schema.rb

See merge request gitlab-org/gitlab-ce!24152

Expose `CI_API_V4_URL` CI/CD variable

Closes #54621

See merge request gitlab-org/gitlab-ce!23936

Improve documentation about only except default values

Closes #55699

See merge request gitlab-org/gitlab-ce!24016