This adds the keyword argument "return_ids" to
Gitlab::Database.bulk_insert. When set to `true` (and PostgreSQL is
used) this method will return an Array of the IDs of the inserted rows,
otherwise it will return an empty Array.

By using SQL::Union we can return a proper ActiveRecord::Relation,
making it possible to select the columns we're interested in (instead of
all of them).

Add Ingress to cluster applications section

See merge request gitlab-org/gitlab-ce!15185

Upgrade vendored templates for 10.2

See merge request gitlab-org/gitlab-ce!15259

Improve GitLab Import rake task to work with Hashed Storage and Subgroups

Closes #36509

See merge request gitlab-org/gitlab-ce!15157

Fix merge_request_spec

See merge request gitlab-org/gitlab-ce!15250

Add support for k8s cluster applications - Helm tiller installation

See merge request gitlab-org/gitlab-ce!14908

Revert Auto DevOps gear animation

Closes #39798

See merge request gitlab-org/gitlab-ce!15232

Merge branch '38464-k8s-apps' of https://gitlab.com/gitlab-org/gitlab-ce into add-ingress-to-cluster-applications

Fixed multi-file editor table cells content width jumping

See merge request gitlab-org/gitlab-ce!15245

Merge branch '38464-k8s-apps' of https://gitlab.com/gitlab-org/gitlab-ce into add-ingress-to-cluster-applications

Make restoring backup database table warning more explicit

Closes #39903

See merge request gitlab-org/gitlab-ce!15246

Fix commit pipeline showing wrong status

Closes #39878

See merge request gitlab-org/gitlab-ce!15238

Fix spec. spec/serializers/cluster_application_entity_spec.rb and spec/serializers/cluster_entity_spec.rb

don't re-run smart interval callback if there is already one in progress

Closes #38394

See merge request gitlab-org/gitlab-ce!15032

Fix arguments error on Import/Export fetch_ref method

Closes #39541

See merge request gitlab-org/gitlab-ce!15241

issue ordering docs

Closes #39712

See merge request gitlab-org/gitlab-ce!15243

Refactor issuables index actions

See merge request gitlab-org/gitlab-ce!15242

Resolve "Warning icon in jobs dropdown has incorrect style"

Closes #39831

See merge request gitlab-org/gitlab-ce!15221

Fix TRIGGER checks for MySQL

Closes #38372

See merge request gitlab-org/gitlab-ce!15226