[stable11] Fix legacy DAV endpoint

[LukasReschke]

This is #2684 for stable11, as the test fail this clearly proofs that something is broken 😢

See https://drone.nextcloud.com/nextcloud/server/3075/32 and https://drone.nextcloud.com/nextcloud/server/3075/35

cc @rullzer

[mention-bot]

@LukasReschke, thanks for your PR! By analyzing the history of the files in this pull request, we identified @Faldon, @tcitworld and @MorrisJobke to be potential reviewers.

[LukasReschke]

@rullzer Can you revert your changes to the test file? In my opinion we should 1:1 use the same test file on this branch as in stable10 and if something fails then … well, then we should adjust the endpoint. Not the test file. This seems wrong to me.

[rullzer]

@pbek could you try this patch?

[rullzer]

@LukasReschke also you please try again. Hopefully this works...

[pbek]

@rullzer the last test brought my NC version up to 12.0.0.10, after checking out stable11-2648 I get an error message Downgrading is not supported and is likely to cause unpredictable issues (from 12.0.0.10 to 11.0.0.10), is there a way to get around that?

[rullzer]

@pbek uhm. If it is a live instance better not. If this works for @LukasReschke I'll create a master PR you should then be able to test.

[pbek]

@rullzer, no, I just created that instance for testing the CalDAV PRs.

[rullzer]

ah uhm. Well either install again. Or edit the version in config/config.php

[pbek]

I went for the latter.
Now I'm happy to confirm that the PUT request went through (with an empty return body) and the ICS was modified on the server. QOwnNotes also works again with that branch!
Great job, @rullzer!

[mariokorte]

@rullzer I too can confirm your fix works! Thanks a million!

[rullzer]

Phew. Ok let me wait for a review of @LukasReschke and then this can hopefully soon go in :D

[rullzer]

Failing tests are unrelated (jsunit + timeout)

[LukasReschke]

LGTM