[QA] Test coverage for cli commands

**NOTE:** Test setup done in https://github.com/owncloud/ocis/pull/9546

Add test coverage for CLI commands introduced in oCIS:
Docs: https://github.com/owncloud/ocis/tree/master/ocis

To Implement:
- https://github.com/owncloud/ocis/issues/8925
- https://github.com/owncloud/ocis/issues/5602

QA issues:
- https://github.com/owncloud/ocis/issues/11989
- https://github.com/owncloud/ocis/issues/11990

Completed tasks:
- https://github.com/owncloud/ocis/issues/9286
- [x] https://github.com/owncloud/ocis/pull/9578
- https://github.com/owncloud/ocis/issues/9472 @prashant-gurung899
- [x] all file versions https://github.com/owncloud/ocis/pull/9584
- [x] from specific space https://github.com/owncloud/ocis/pull/9639
- [x] from specific file https://github.com/owncloud/ocis/pull/9627
- https://github.com/owncloud/ocis/issues/9474
- [x] reset password: https://github.com/owncloud/ocis/pull/9546
- [x] try to reset password of non-existing user @S-Panta https://github.com/owncloud/ocis/pull/9575
- [x] #9581 @S-Panta https://github.com/owncloud/ocis/pull/9593
- https://github.com/owncloud/ocis/issues/9393 @S-Panta
- [x] https://github.com/owncloud/ocis/pull/9617
- https://github.com/owncloud/ocis/issues/9103 @ishabaral
- [x] reindex all spaces https://github.com/owncloud/ocis/pull/9630
- [x] reindex specific space https://github.com/owncloud/ocis/pull/9630
- [x] https://github.com/owncloud/ocis/issues/10793 : use `ocis notifications send-email` to use the service. Make sure to write test that email notification comes daily when `daily` is chosen in UI . (and other variation of this scenario) @anon-pradip https://github.com/owncloud/ocis/pull/10920
- https://github.com/owncloud/ocis/issues/10167
- https://github.com/owncloud/ocis/issues/10096