[QA] Test coverage for cli commands

[amrita-shrestha]

Implemented base code on #9286
NOTE: Implementation done in #9546

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

To Implement:

• Add cli command to clean up spaces #8925
• CLI Command to get User-ID and Space-ID #5602

Open tasks:

• Add cli to remove versions #9472 @prashant-gurung899
  • all file versions [tests-only][full-ci] adding test to remove old versions of resources using cli command #9584
  • from specific space [tests-only][full-ci] adding test to remove old versions of files from a space using space-id using CLI  #9639
  • from specific file [tests-only][full-ci] adding test to remove old versions of a file using file-id using cli command #9627
• Reseting password via cli doesn't work when adminUserName has been changed #9474
  • reset password: [POC][tests-only] add endpoints to accept ocis commands #9546
  • try to reset password of non-existing user @S-Panta [tests-only][full-ci] added cli test for changing password of non-existing user #9575
  • [QA] CLI test to reset admin password #9581 @S-Panta [tests-only][full-ci] added test for updating admin password via cli #9593
• cli tool to clean up empty dirs in the trash* #9393 @S-Panta
  • [tests-only][full-ci] cli test for delete empty trash bin directory #9617
• search: re-index command for all spaces #9103 @ishabaral
  • reindex all spaces [tests-only][full-ci] search: reindex command for spaces #9630
  • reindex specific space [tests-only][full-ci] search: reindex command for spaces #9630