Improve sharing permissions acceptance tests

[SergioBertolinSG]

Currently smashbox is doing a full test of permissions.

We need that in integration tests.

ref: owncloud/core#25389

If would require to check in the filesystem if the permissions are respected.

[PVince81]

Will there be time for this in the OC 10 timeframe, after all other important stuff is done ?

[phil-davis]

@paurakhsharma we have been extending the sharing acceptance tests with different ownCloud permissions.
Issue owncloud/core#31531 has relevant links to PRs.

We need to review what we have done there. Then see what the smashbox stuff is doing and make tests to cover that also.

[skshetry]

@phil-davis Can we close this? You have already done a lot of tests regarding sharing permissions already.

[phil-davis]

Yes, create share, re-share and update share have combinations of permissions tested nowadays.