Fix minor TYPOs in Geo docs

See merge request gitlab-org/gitlab-ee!3224

Merge branch 'pawel/bump_prometheus_gem_to_fix_read_all_values_returning_bad_data-39504' into 'master'

Update Prometheus Gem to fix problem caused by using wrong data offsets

See merge request gitlab-org/gitlab-ce!15081

Fix broken Members link when relative URL root paths are used

See merge request gitlab-org/gitlab-ee!3221

Navigating to the "Members" section of a project would omit the
relative URL root path. Fix the redirection and eliminate the
need for a redirection in the first place.

Related Rails issue discussing omitting the leading slash in the
redirect paths: https://github.com/rails/rails/issues/21193

Fix other redirections failing to work with relative roots.

Ee 38869 importer status - Remove code from global namespace

See merge request gitlab-org/gitlab-ee!3212

Geo: database-backed SSH key lookups are mandatory

See merge request gitlab-org/gitlab-ee!3209

CE upstream: Friday

Closes gitlab-ce#39188, gitaly#683, #3664, and gitlab-ce#39351

See merge request gitlab-org/gitlab-ee!3214

EE: Fetch the merged branches at once

See merge request gitlab-org/gitlab-ee!3204

Update EE docs to allow not having EE namespace

See merge request gitlab-org/gitlab-ee!3194

* upstream/master: (72 commits)
  Avoid using Rugged in Gitlab::Git::Wiki#preview_slug
  Cache commits on the repository model
  Remove groups_select from global namespace & simplifies the code
  Change default disabled merge request widget message to "Merge is not allowed yet"
  Semi-linear history merge is now available in CE.
  Remove repetitive karma spec
  Improve spec to check hidden component
  Rename to shouldShowUsername
  Add KubernetesService#default_namespace tests
  Revert "Merge branch '36670-remove-edit-form' into 'master'"
  Fix bitbucket login
  Remove duped tests
  Add path attribute to WikiFile class
  Make local_branches OPT_OUT
  Clarify the language around External Group membership with SAML SSO to clarify that this will NOT add users to GitLab Groups.
  Added ssh fingerprint, gitlab ci and pages information in an instance configuration page
  Fix the incorrect value being used to set GL_USERNAME on hooks
  Resolve "Remove overzealous tooltips in projects page tabs"
  Fix broken table of content links
  Remove filter icon from search bar
  ...

Geo: Ensure database is connected before attempting to check for secondary status

Closes #3074

See merge request gitlab-org/gitlab-ee!3112

Cache commits on the repository model

See merge request gitlab-org/gitlab-ce!14863

Avoid using Rugged in Gitlab::Git::Wiki#preview_slug

See merge request gitlab-org/gitlab-ce!15054

Add configurable option to display username in user avatar link component

See merge request gitlab-org/gitlab-ce!14902

EE - Remove groups_select from global namespace & simplifies the code

See merge request gitlab-org/gitlab-ee!3203

Sanitize k8s default_namespace

Closes #38692

See merge request gitlab-org/gitlab-ce!15053

Change default disabled merge request widget message to be more general -- EE merge edition

Closes gitlab-ce#39188

See merge request gitlab-org/gitlab-ee!3180

Revert "Merge branch '36670-remove-edit-form' into 'master'"

Closes #39441

See merge request gitlab-org/gitlab-ce!15049

Revert "Merge branch '36670-remove-edit-form' into 'master'"

See merge request gitlab-org/gitlab-ee!3208

Change default disabled merge request widget message to be more general

Closes #39188

See merge request gitlab-org/gitlab-ce!14960