* upstream/master: (889 commits)
  SlackService - respect `notify_only_default_branch` for push events
  Clarify usage ping wording in admin area
  Update incoming emails documents
  Allow to include also descendant group labels
  Update docs on grouping CI jobs
  Support additional LabelsFinder parameters for group labels
  Extend Cluster Applications to install GitLab Runner to Kubernetes cluster
  Remove registry list webpack entry point
  Remove trailing newline that was causing an EE conflict
  Small fixes in Vuex docs
  Remove u2f webpack bundle
  Update documentation WRT to request parameters
  remove common_vue CommonsChunk config
  Fetch commit signatures from Gitaly in batches
  migrate stl_viewer to dynamic import
  migrate sketch_viewer to dynamic import
  migrate pdf_viewer to dynamic import
  migrate notebook_viewer to dynamic import
  migrate balsamiq_viewer to dynamic import
  Add some strings that were missing in gitlab.pot
  ...

Slack notifications - Respect "Notify only default branch" for push events

Closes #33570

See merge request gitlab-org/gitlab-ce!17345

Update incoming emails documents

See merge request gitlab-org/gitlab-ce!17481

Resolve "Update language about usage ping in admin settings"

Closes #43548

See merge request gitlab-org/gitlab-ce!17468

Fetch commit signatures from Gitaly in batches

Closes gitaly#1046

See merge request gitlab-org/gitlab-ce!17456

Support additional LabelsFinder parameters for group labels

See merge request gitlab-org/gitlab-ce!17447

Because epic index page includes also epics from subgroups
it's necessary to also get descendant group labels for filtering.
https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/4773#note_61236542

Allow CI/CD Jobs being grouped on version strings

See merge request gitlab-org/gitlab-ce!17455

In some situations (listing labels for epics) we want to
list only group ancestor labels, this is already supported
in LabelsFinder we just need to enable additional parameters.

Also `set_issuables_index` method now loads project labels only if
@project is set (which is not used for epic group labels).

Update documentation WRT to request parameters

See merge request gitlab-org/gitlab-ce!17469

Extend Cluster Applications to install GitLab Runner to Kubernetes cluster

Closes #32831

See merge request gitlab-org/gitlab-ce!17134

Remove registry list webpack entry point

See merge request gitlab-org/gitlab-ce!17459

Remove trailing newline that was causing an EE conflict

See merge request gitlab-org/gitlab-ce!17465

Add some strings that were missing in gitlab.pot

See merge request gitlab-org/gitlab-ce!17467

Small fixes in Vuex docs

See merge request gitlab-org/gitlab-ce!17471

Remove u2f webpack bundle

See merge request gitlab-org/gitlab-ce!17435

Remove blob viewer bundles

See merge request gitlab-org/gitlab-ce!17446

Moved o_auth/saml/ldap modules under gitlab/auth

See merge request gitlab-org/gitlab-ce!17359

Resolve "Include cycle time in usage ping"

Closes #41777

See merge request gitlab-org/gitlab-ce!16793

Display ingress IP address in the Kubernetes page

See merge request gitlab-org/gitlab-ce!17052

Closes gitaly#1046

Client implementation for Licensee#key

See merge request gitlab-org/gitlab-ce!17449