* Send new annotation containing image url
* Use new image TokenProvider with TokenStore
New abstraction GetImage no longer needs to support parsing both token and
url from annotations, as remote AM will use the new URLProvider. Instead, we
use the new generic TokenProvider and give it a TokenStore backed by the
grafana database.
That means we revert back to always using token simplifying code and security
considerations.
* Upgrade grafana/alerting to merged commit SHA
Ensures we retake images after expiration on long-lived repeat alerts.
Otherwise, logs would show "Image not found in database" and notifications
would cease to contain an image after 24h of continuous firing.
* (WIP) Refactor the ImageStore interface to work with our latest alerting repository
* update alerting package
* refactor, new URLExists method in ImageProvider
* tests for the new methods
* fix linter warnings
* use alertingImages as an alias for grafana/alerting/images
* logs about image uris and not found images
* nerf image not found logs
* extract duplicated code to getImageFromURI() method
* refactor getImageFromURI()
* add index on url
* add comment about migration log
* sync generated files
* use tokens or urls in image annotations
* improve tests, fix some comments
* fix empty tokens
* code review changes, check for url before checking for token (support old token formats)
Yuri Tseretyan
Matthew Jacobson
Santiago
Alexander Weaver