* master:
  changelog: adds note about closing #10131
  Explicitly specify default region in CloudWatch datasource (#9440)
  wait for all sub routines to finish
  changelog: adds ntoe about closing #10111
  postgres: change $__timeGroup macro to include "AS time" column alias (#10119)
  fixes broken test
  Solves problem with Github authentication restriction by organization membership when the organization's access policy is set to "Access restricted". "Access restricted" policy should not stop user to authenticate.

Wait for all sub routines to finish before closing Grafana

The datasource uses the default region in the query if the region
is "" in the settings. However setting the region to an empty string
is almost impossible and rendered incorrectly.

This commit introduces a special value "default" for region which
is shown in the drop down and is translated to the default region
of the data source when performing queries.

simple solution for waiting for all go sub routines to
finish before closing Grafana. We would use errGroup
here as well but I dont like spreading context's all
over the place.

closes #10131

Solves problem with Github authentication restriction by organization

* change $__timeGroup macro to include column alias

* update docs and help text for $__timeGroup macro

* master:
  improve error handling for datasources as cfg
  improve sample datasource.yaml

* master:
  make gitignore more generic
  fixes issue with datasource/dash as cfg and gitignore

Load dashboards from disk into the database at regular interval