Testcase: etag+size propagation through shared folders

[PVince81]

See owncloud/core#14596 (comment) for steps and details.

We need to check that when uploading a file as recipient, the owner's root folder "files" (in the DB) has its etag and size updated.

It seems that this has worked in OC 6 but was broken in OC 7 when reworking the shared folder stuff.

@jnfrmarks

[PVince81]

Note: testing with sync clients might not be accurate because they contain workarounds for this known bug (which existed in OC 5). To be more accurate, do a PROPFIND on the root folder of the owner and check that "d:etag" changed after upload and "oc:size" has increased.

[PVince81]

Additional note: this also needs to be tested whenever the shared folder is deep in the sharer's tree.
For example: the sharer shares the folder "/level1/level2/level3".
The etag and size MUST propagate up to the root.

[jnfrmarks]

Depends on #27

[PVince81]

Possible test plan here: owncloud/core#14764 (comment)