Test for size based auto swap out mechanism

Change-Id: Iff0942b9b545f27dd74b73bee3f8ac785539867d
Related fdo#82953: Forget package URL of image after it is loaded

It causes problems if we handle those imported images differently which
are identified by a package URL, so after the first load remove
this URL and handle images on the same way as inserted images.

Some related bugs:
* #i44367#
* #i124946#
* #i114361#
* fdo#73270

The image in the test document has a special ID which is different
from that one which is generated by LO internally so after ODF export
the new generated image URL is different from the imported one.

Change-Id: I4e7d3490674c5f86bec5c7c6e1c975dcafd7c265
Avoid DelStreamName because it can lead to image loss.

See also:
f811e628411bda29a76ebb1f72eb107ce67d27f0

The problem is that more images can have the same stream name
so we can't decide here when to remove one stream name. Better
to leak in the storage as to loose images (actually we already
leak here, so)

Change-Id: I2c2afe87e024c2521fe22d62126b567931604101
Set back these lines, later it can be useful

Removed in:
9dc3b49c891fb9fe45c24de4b7e1e88fe400afe0

Change-Id: Id8cee4e17d214ca0eaa5cd11dc25849e5f68851e