Requires `--queue` to be used alongside `--set-param`.
Doesn't strictly require `hydra.config.enabled`.
Add `get_hydra_sweeps` to `dvc/utils/hydra.py`. Uses hydra `BasicSweeper` to generate the different sweeps.
`glob` syntax for sweeps is not supported in this P.R.
Closes#8083
---
Using setup from https://hydra.cc/docs/tutorials/basic/your_first_app/composition/ :
```console
$ dvc exp run -S "db=mysql,postgresql" -S "schema=warehouse,school" --queue
Queueing with '{'params.yaml': ['db=mysql', 'schema=warehouse']}'.
Queued experiment '5ab98b8' for future execution.
Queueing with '{'params.yaml': ['db=mysql', 'schema=school']}'.
Queued experiment '57c2fb6' for future execution.
Queueing with '{'params.yaml': ['db=postgresql', 'schema=warehouse']}'.
Queued experiment 'b9d6391' for future execution.
Queueing with '{'params.yaml': ['db=postgresql', 'schema=school']}'.
Queued experiment '145cd55' for future execution.
```
The feature will be used depending on whether `config.hydra.enabled` is True or False.
Uses `hydra.initialize_config_dir` and `hydra.compose` (from https://hydra.cc/docs/advanced/compose_api/) to build the config and dump it to `params.yaml`. The content of the output file will be overwritten.
`config.hydra.config_dir` and `config.hydra.config_name` can be used to customize the values passed to `hydra.initialize_config_dir` and `hydra.compose`.
Can be combined with `--set-param` overrides.
Closes#8082
Saugat Pachhai (सौगात)
David de la Iglesia Castro
dberenbaum