Add alert rules to backup

[mt3593]

Back up of alert_rules, addresses #197

I am by no means a python developer, so please let me know what i've got wrong

[mt3593]

I've tested this locally and was able to copy alert rules from one grafana to the other. Not sure what other tests I need to do, let me know

[acjohnson]

@mt3593 Mind adding alert_rules to the list of components in the docopt cli? I know this line is getting long and at some point we'll want to find a better way to format it... but... for now it should at least list all supported components IMHO.
https://github.com/ysde/grafana-backup-tool/blob/master/grafana_backup/cli.py#L28

[mt3593]

@acjohnson any more to update? or is this good to merge?

[acjohnson]

Thank you for your contribution @mt3593 !

[mt3593]

@acjohnson Thanks for that. When is the next version due for release?

[mt3593]

@acjohnson Thanks for that. When is the next version due for release?

sorry to pester @acjohnson, keen to get the updated version :)

[acjohnson]

@ysde The draft 1.2.6 release looks good to me if you want to publish it and get this out the door 😁

[michyliao]

Hey! Just wanted to mention that this merge should have a break change notice - to be up to date with the latest grafana version. We're still using 8.2.4 and our backup job failed with a 404 on alert-rules.

[acjohnson]

@michyliao thank you for the heads up in that case it'd be better if we can add a version check for alert-rules support rather than adding a break change.