Alerting: Add GUID to alert rule tables (#101321)

* add column guid to alert rule table and rule_guid to rule version table
+ populate the new field with UUID
* update storage and domain models
* patch GUID
* ignore GUID in fingerprint tests

pkg/services/sqlstore/migrations/migrations.go

@@ -145,4 +145,6 @@ func (oss *OSSMigrations) AddMigration(mg *Migrator) {
 	ualert.AddAlertRuleUpdatedByMigration(mg)
 
 	ualert.AddAlertRuleStateTable(mg)
+
+	ualert.AddAlertRuleGuidMigration(mg)
 }