* add method CanReadAllRules to rule authorization service
* add alias type Namespace for Folder in ngalert's models package. It implements the Namespacer interface that is used by authz logic
* update state history's backends to authorize access to rules.
* update Loki to add folders UIDs to query.
* Update BuildLogQuery to drop filter by folders if it's too long and fall back to in-memory filtering.
* extract genericService from RuleService just to reuse it later
* implement silence service
---------
Co-authored-by: William Wernert <william.wernert@grafana.com>
Co-authored-by: Matthew Jacobson <matthew.jacobson@grafana.com>
* require "folders:read" and "alert.rules:read" in all rules API requests (write and read).
* add check for permissions "folders:read" and "alert.rules:read" to AuthorizeAccessToRuleGroup and HasAccessToRuleGroup
* check only access to datasource in rule testing API
---------
Co-authored-by: William Wernert <william.wernert@grafana.com>
