* make TimeRange interface and add relative range
* make Execute methods support the current time
* update resample to support relative time range
* update DSNode to support relative time range
* update query service to create queries with absolute time
* make alerting evaluator create relative time ranges
* update swagger json files match datasourceUid change
underlying change made in https://github.com/grafana/grafana/pull/33282
* Document DatasourceUID field in AlertQuery model
* Run spec generation from inside a docker container
* Generate latest spec
Co-authored-by: Sofia Papagiannaki <sofia@grafana.com>