Remove some unnecessary methods after we removed the support
for legacy queries.

Since we made Foreign Data Wrapper (FDW) a hard requirement for
Geo on GitLab 12.0 we don't need to test the scenarios when the
feature flag is disabled.

This commit removes the legacy finder for attachments since
we made Foreign Data Wrapper (FDW) a hard requirement for
Geo on GitLab 12.0.

This commit removes the legacy queries to find migrated
attachments since we made Foreign Data Wrapper (FDW) a hard
requirement for Geo on GitLab 12.0.

This commit removes the legacy queries to find attachments
to sync since we made Foreign Data Wrapper (FDW) a hard
requirement for Geo on GitLab 12.0.

This commit removes the legacy queries to find registries
foor attachments since we made Foreign Data Wrapper (FDW)
a hard requirement for Geo on GitLab 12.0.

This commit removes the legacy queries to find attachments
missing on primary since we made Foreign Data Wrapper (FDW)
a hard requirement for Geo on GitLab 12.0.

This commit removes the legacy queries to find attachments
that sync failed since we made Foreign Data Wrapper (FDW)
a hard requirement for Geo on GitLab 12.0.

This commit removes the legacy queries to find synced
attachments since we made Foreign Data Wrapper (FDW)
a hard requirement for Geo on GitLab 12.0.

This commit removes the legacy queries for projects updated
recently since  we made Foreign Data Wrapper (FDW) a hard
requirement for Geo on GitLab 12.0.

This commit removes the legacy queries for unsynced projects
since  we made Foreign Data Wrapper (FDW) a hard requirement
for Geo on GitLab 12.0.

This commit removes the legacy queries for project registries that
need a repository or wiki verification since we made Foreign Data
Wrapper (FDW)  a hard requirement for Geo on GitLab 12.0.

This commit removes the legacy queries for project registries that
are retrying verification since we made Foreign Data Wrapper (FDW)
a hard requirement for Geo on GitLab 12.0.

This commit removes the legacy queries for project registries that
checksum mismatch since we made Foreign Data Wrapper (FDW) a hard
requirement for Geo on GitLab 12.0.

This commit removes the legacy queries for project registries that
verification failed since we made Foreign Data Wrapper (FDW) a hard
requirement for Geo on GitLab 12.0.

This commit removes the legacy queries for project registries that
have been verified since we made Foreign Data Wrapper (FDW) a hard
requirement for Geo on GitLab 12.0.

This commit removes the legacy queries for project registries that
have sync have failed since we made Foreign Data Wrapper (FDW) a
hard requirement for Geo on GitLab 12.0.

This commit removes the legacy queries for project registries that
have been synced since we made Foreign Data Wrapper (FDW) a hard
requirement for Geo on GitLab 12.0.

Fix GeoNodeStatus#update_cache! spec

Closes #12263

See merge request gitlab-org/gitlab-ee!14267

Un-quarantine instance level project template spec

Closes gitlab-org/quality/staging#51

See merge request gitlab-org/gitlab-ee!14245

Remove support for app label matching

See merge request gitlab-org/gitlab-ce!29460

[EE] Removes support for matching on `app` label

See merge request gitlab-org/gitlab-ee!14020

Removes database.yml.example

See merge request gitlab-org/gitlab-ce!29822

It's an empty file that was committed by accident on
https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/28565

Based on my reading of #calculate_reactive_cache in
ee/app/models/concerns/ee/kubernetes_service.rb, data[:pods] will always
be present whenever data[:deployments] is present.

From now on, only match on the annotations, instead of falling back to
legacy app label. This enables users to use the app label for other
purposes such as helm charts.

This documents the sitution pre-12.0

From now on, only match on the annotations, instead of falling back to
legacy app label. This enables users to use the app label for other
purposes such as helm charts.

Cache feature flag names in Redis for a minute

Closes #63435

See merge request gitlab-org/gitlab-ce!29816

Adds docs for job collapsible sections

See merge request gitlab-org/gitlab-ce!29792