* tree: validate resolved remote:// sections
* dvc: use checksum_jobs instead of hash_jobs
This is a regression introduced during one of the refactorings.
We used to use that logic in DvcTree back before we had proper trees.
Now we have a RepoTree, that combines git/workspace tree with the
DvcTree and dirty state clearly belongs to the git/workspace and not
the dvc itself, as dvc state only depends on dvc-files and lock-files.
Prerequisite for #4523
* support subrepos
This adds support for get/list/api/import/ls on a subrepo.
Also fixes#3180, by adding a granular url support for `dvc.api.get_url`
And, of course it fixes#3369.
* Add tests
* Fix tests, started to get lock_error
* Fix tests for windows
* try to fix mac builds
* Fix comments, readd removed comments
* Fix test
* address review suggestions:
* use `spy` instead of `wraps`
* remove dvc fixture in a test
* set `cache_types` on Git repo
* dvc: use cache state when saving downloaded cache
Related to #4485
* tree: dont compute hash from scratch for output dirs
Fixes#4485
* tree: fix get_hash
Ruslan Kuprieiev
Saugat Pachhai
