Rework of PR#755

[refs]

Use the CS3 API and Reva to deprovision users completely.

Two new environment variables introduced:

OCS_IDM_ADDRESS
OCS_STORAGE_USERS_DRIVER

OCS_IDM_ADDRESS is also an alias for OCIS_URL; allows the OCS service to mint jwt tokens for the authenticated user that will be read by the reva authentication middleware.

OCS_STORAGE_USERS_DRIVER determines how a user is deprovisioned. This kind of behavior is needed since every storage driver deals with deleting differently.

This is being tested with:

make test-acceptance-api \
TEST_SERVER_URL=https://localhost:9200 \
TEST_OCIS=true \
SKELETON_DIR=/Users/aunger/code/owncloud/core/apps/testing/data/apiSkeleton \
BEHAT_FEATURE=tests/acceptance/features/apiBugDemonstration/apiWebdavPreviews-previews.feature \
PATH_TO_CORE=/Users/aunger/code/owncloud/core

TODO:

• Add PR description
• Do we want to opt with this solution or instead use the StorageSpaces API?
• Does this work with the owncloud driver? Does it have to?

[update-docs]

Thanks for opening this pull request! The maintainers of this repository would appreciate it if you would create a changelog item based on your changes.

[butonic]

Why does this not work for the owncloud driver?

[refs]

@butonic https://github.com/cs3org/reva/blob/master/pkg/storage/fs/owncloud/owncloud.go#L1146-L1152

// If home is enabled, the relative home is always the empty string
func (fs *ocfs) GetHome(ctx context.Context) (string, error) {
	if !fs.c.EnableHome {
		return "", errtypes.NotSupported("ocfs: get home not supported")
	}
	return "", nil
}

[refs]

the logic probably should be more generic, but this at least makes the only consumer (CI) happy

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!

0 Bugs
0 Vulnerabilities
0 Security Hotspots
2 Code Smells

1.1% Coverage
0.0% Duplication