Bump Git version requirement to 2.7.4 (for 8.4)

[ci skip]

See merge request !3283

[ci skip]

Update LDAP groups asynchronously

Based on https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/190

See merge request !220

Bump gitlab_git to ~> 7.2.24

bump gitlab_git to ~> 7.2.24 (closes: #13245)

See merge request !2772

[ci skip]

Add notice about variables in build log

Related to: https://dev.gitlab.org/gitlab/gitlabhq/merge_requests/1942

[ci skip]

See merge request !2761

[ci skip]

[ci skip]

Limit guest access builds (for EE 8-4-stable-ee)

This is https://dev.gitlab.org/gitlab/gitlabhq/merge_requests/1942 for ee-stable

See merge request !495

Fix timeout issue for rake task gitlab:backup:create

This is a fix for a database timeout which can occur when the backup
create task is taking very long (1-2 hours).
It seems that ActiveRecord is loosing the connection after a hour
idleness and need to be reconnected before use.

See merge request !2757

This solves https://dev.gitlab.org/gitlab/gitlabhq/issues/2646

1. This MR simplifies CI permission model:
    - read_build: allows to read a list of builds, artifacts and trace
    - update_build: allows to cancel and retry builds
    - admin_build: allows to manage triggers, runners and variables
    - read_commit_status: allows to read a list of commit statuses (including the status of a build, but doesn't allow to see a build details)
    - create_commit_status: allows to create a new commit status using API

2. I do make sure that the proper permissions are used in all places where the CI can be shown.

3. Add the `read_build` ability if user is anonymous or guest and allow_guest_to_access_builds is enabled.

4. Add CI setting: public_builds.

5. The artifacts specific permission are removed, since they are covered by `*_build`.

Update gitlab-elasticsearch-git

See merge request !170

Limit guest access builds

This is https://dev.gitlab.org/gitlab/gitlabhq/merge_requests/1942 for ce-stable

See merge request !1943

This solves https://dev.gitlab.org/gitlab/gitlabhq/issues/2646

1. This MR simplifies CI permission model:
    - read_build: allows to read a list of builds, artifacts and trace
    - update_build: allows to cancel and retry builds
    - admin_build: allows to manage triggers, runners and variables
    - read_commit_status: allows to read a list of commit statuses (including the status of a build, but doesn't allow to see a build details)
    - create_commit_status: allows to create a new commit status using API

2. I do make sure that the proper permissions are used in all places where the CI can be shown.

3. Add the `read_build` ability if user is anonymous or guest and allow_guest_to_access_builds is enabled.

4. Add CI setting: public_builds.

5. The artifacts specific permission are removed, since they are covered by `*_build`.

Fix elasticsearch indexing for newly created snippets



See merge request !165

Fix Jenkins service regression where category was incorrectly set to "common"

Fixes #263 

Migrate `JenkinsService` and `JenkinsDeprecatedService` so they are
correctly categorized as `ci` services again.

This prevented the deprecated service from correctly showing the build
status on merge requests.

See merge request !163

Re-introduce "Send email to users" link in Admin area

This link was mistakenly removed during a CE-to-EE merge. We've added a
view spec to ensure it doesn't happen again!

Closes gitlab-org/gitlab-ee#222

See merge request !161

Updated omniuath-saml to the latest version.

See merge request !2684

Updated omniuath-saml to the latest version.

See merge request !2684

Fix Mirror User dropdown

Fixes https://gitlab.com/gitlab-org/gitlab-ee/issues/218

See merge request !158