Previously when performing a write we would stick to the primary for the
duration of a request. This could lead to unnecessary pressure on the
primary database.

To work around this we stop using the primary the moment all secondaries
are in sync with the last write. If we are in an explicit transaction we
will keep using the primary until the transaction finishes.

Fixes https://gitlab.com/gitlab-org/gitlab-ee/issues/6041

CE upstream - 2018-05-16 09:25 UTC

Closes gitaly#884

See merge request gitlab-org/gitlab-ee!5728

Port of gitlab-ce!18941

See merge request gitlab-org/gitlab-ee!5694

Docs fe vuex updates

See merge request gitlab-org/gitlab-ce!18826

Add contact sales option for Epics

Closes #5710

See merge request gitlab-org/gitlab-ee!5601

CE upstream - 2018-05-16 03:24 UTC

Closes gitlab-com/infrastructure#3499

See merge request gitlab-org/gitlab-ee!5726

Document the 3h timeout for GitLab.com shared Runners

See merge request gitlab-org/gitlab-ce!18983

Add documentation for bulk editing of issues and merge requests

Closes #41873

See merge request gitlab-org/gitlab-ce!16614

Ref contains oid check done by Gitaly

Closes gitaly#884

See merge request gitlab-org/gitlab-ce!18944

5943 improve license management tests

Closes #5943

See merge request gitlab-org/gitlab-ee!5718

# Conflicts:
#	app/models/project.rb
#	db/schema.rb
#	locale/gitlab.pot

[ci skip]

CE upstream - 2018-05-15 09:46 UTC

See merge request gitlab-org/gitlab-ee!5711

Fix bug with long strings in issue boards

Closes #43367

See merge request gitlab-org/gitlab-ce!18924

Fix setting Gitlab metrics content types

Closes gitlab-com/infrastructure#3499

See merge request gitlab-org/gitlab-ce!18975

Does not rescue from GRPC::DataLoss errors

See merge request gitlab-org/gitlab-ee!5716

Geo: Fix repo, wiki, and upload replication when renaming a namespace that has subgroups, without hashed storage enabled

Closes #6012

See merge request gitlab-org/gitlab-ee!5704

Resolve "Add nip.io domain suggestion in the Kubernetes cluster details view"

Closes #45584

See merge request gitlab-org/gitlab-ce!18496

EE: Display help text below auto devops domain with nip.io domain name (#45561)

See merge request gitlab-org/gitlab-ee!5691

improve basic details on inspecting NFS mounts

See merge request gitlab-org/gitlab-ce!18734

This limit is (and already was) different in compare to CE
version, bumping this now to reflect recent change introduced by
gitlab-ce!18735.

add values to OpenID configuration test, not only checking for issuer key

See merge request gitlab-org/gitlab-ce!18773

Fix link for `query_recorder.rb`

See merge request gitlab-org/gitlab-ce!18761

fix runner requirements

See merge request gitlab-org/gitlab-ce!18728

The method "content_type" on a controller does not always return the
correct content type. On the other hand, the method "request_format"
does _and_ immediately returns a Symbol (e.g. :json) instead of a
mime-type name (e.g. application/json). With these changes metrics
should again report their action names correctly.

Fixes https://gitlab.com/gitlab-com/infrastructure/issues/3499

Add a unique and not null constraint on the project_features.project_id column

Closes #37882

See merge request gitlab-org/gitlab-ce!18925

Simplified priority, performance impact should be severity

See merge request gitlab-org/gitlab-ce!18873

Update Web IDE documentation with recent changes

See merge request gitlab-org/gitlab-ce!18910

Remove authentication for readonly endpoints in issues API

Closes #40855

See merge request gitlab-org/gitlab-ce!18638