Alerting: Support for optimistic concurrency in priovisioning Tempate API (#91195)
* support optimistic concurrency in template service
* update request handler to get version from query parameter
* return not found if a new template is set with version
* update PUT api to set version
* update documentation + for mute timings
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Co-authored-by: brendamuir <100768211+brendamuir@users.noreply.github.com>
(cherry picked from commit 1108a00668)
Co-authored-by: Yuri Tseretyan <yuriy.tseretyan@grafana.com>
25c9b9d58e