Ensure that OTP backup codes are always invalidated - 10.5 port

See merge request gitlab/gitlabhq!2324

Update gitlab-pages version (GitLab 10.5)

See merge request gitlab/gitlabhq!2330

This reverts commit 0b7d1085

Fixed confict in schema.rb

Unify deployment_platform interface with EE

See merge request gitlab-org/gitlab-ce!17594

Fix group boards migration name

See merge request gitlab-org/gitlab-ce!17592

Merge branch 'move-pipeline_default-update_head_pipeline_for_merge_request-queue-to-pipeline_processing-namespace' into 'master'

Move update_head_pipeline_for_merge_request queue to `pipeline_processing` namespace

Closes #43919

See merge request gitlab-org/gitlab-ce!17572

Set sha256 checksum when archiving traces

Closes #43940

See merge request gitlab-org/gitlab-ce!17570

CE Port: Add `js-` classes in LabelsSelect component

See merge request gitlab-org/gitlab-ce!17558

Cluster monitoring changes CE backport

See merge request gitlab-org/gitlab-ce!17547

Bring one group board to CE

Closes #38337

See merge request gitlab-org/gitlab-ce!17274

Unify lib/api/merge_requests.rb with EE

See merge request gitlab-org/gitlab-ce!17539

Speedup CI jobs

See merge request gitlab-org/gitlab-ce!14911

Docs guidelines: cherry-picking commits from CE to EE

Closes #41338 and #28822

See merge request gitlab-org/gitlab-ce!17367

Refactoring changes to support cluster metrics in EE

Closes #42820

See merge request gitlab-org/gitlab-ce!17336

# Conflicts:
#   app/models/group.rb
#   db/schema.rb

Lazy fetch parent commits for a commit

See merge request gitlab-org/gitlab-ce!17559

Unify lib/api/job_artifacts.rb with EE

See merge request gitlab-org/gitlab-ce!17556

Port of ee translations

See merge request gitlab-org/gitlab-ce!17526

Fix project dashboard showing the wrong timestamps

Closes #27181

See merge request gitlab-org/gitlab-ce!17504

Add archive feature to trace

Closes #43022 and gitlab-ee#4170

See merge request gitlab-org/gitlab-ce!17314

Document required PG extensions

Closes #43798

See merge request gitlab-org/gitlab-ce!17491

Breadcrumbs on Project Tags

Closes #43924

See merge request gitlab-org/gitlab-ce!17562

Resolve "API endpoint for exporting project"

Closes #29130

See merge request gitlab-org/gitlab-ce!15860

This should speed up a bit some jobs.

Also, use ruby:2.4-alpine image in the flaky-examples-check job
Signed-off-by: Rémy Coutable <remy@rymai.me>

Signed-off-by: Rémy Coutable <remy@rymai.me>

# Conflicts:
#	spec/models/clusters/applications/prometheus_spec.rb