This change adds the capability of filtering and pagination for group
runners, group administrators can search and locate their runners.

This change add a new page to manage group runners behind the
feature flag runner_list_group_view_vue_ui.

The new page is added to the sidebar menu as CI/CD -> Runners.

Contributes to https://gitlab.com/gitlab-org/gitlab/-/issues/220040
in solving Rails/SaveBang Rubocop rule offenses.

The plan for RSpec 4.0 is to disable monkey patching:
https://rspec.info/blog/2013/07/the-plan-for-rspec-3/#zero-monkey-patching-mode

This commit stops using RSpec monkey patching:
https://relishapp.com/rspec/rspec-core/docs/configuration/zero-monkey-patching-mode

347 files inspected, 176 offenses detected, 176 offenses corrected

- Use authorize_admin_group! instead of authorize_admin_pipeline!
- Added role-based permission specs for Groups::RunnersController

- Use authorize_admin_group! instead of authorize_admin_pipeline!
- Added role-based permission specs for Groups::RunnersController

Adds frozen string to the following:

* spec/bin/**/*.rb
* spec/config/**/*.rb
* spec/controllers/**/*.rb

xref https://gitlab.com/gitlab-org/gitlab-ce/issues/59758

Updates specs to use new rails5 format.

The old format:
`get :show, { some: params }, { some: headers }`

The new format:
`get :show, params: { some: params }, headers: { some: headers }`

Updates specs to use new rails5 format.

The old format:
`get :show, { some: params }, { some: headers }`

The new format:
`get :show, params: { some: params }, headers: { some: headers }`

Feedback:
https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/8664#note_23427575