Changes

Explain and replace image for import of fake with resolutions in test_render_image_region_tile_params_big_image

Rewrite test_render_image_region_tile_params_big_image for fake with pyramids

Add a call for res level 5 and check it fails with 400

Fix test_render_image_region_region_params analogically

Fix test_render_image_region_big_image_resolution analogically

Fix test_render_birds_eye_view_big_image - do not use import_pyramid()

Fix also test_render_image_region_region_params_big_image

Use "data" variable as in other tests

Explain 3 tests which are dependent on omero-pyramids

Skip the omero-pyramids dependent tests conditionally

Add missing imports

Java skip thumbnails permission tests: use fake pyramidal images

Instead of relying on the deprecated PixelData service to generate
an OMERO pyramid for a fake single-resolution image larger than
3kx3k, use the resolutions key to import a multi-resolution fake
image.

SkipThumbnailsPermissionsTest: move the pyramid keys to the suffix

As per https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/File.html#createTempFile(java.lang.String,java.lang.String,java.io.File)
createTempFile adds internally generated characters between the prefix
and the suffix.
These characters interfere with the number of resolutions specified
by the resolutions key in the filename.

Fix compilation error

Explain skipping testThumbnailVersion - no sense without omero pyramids

Explain why to retain first tests: API behavior when missing pyramids

Add missing import

Revert changes from PR #6464 which was merged  -> no polling

Add comments clarifying the scope of tests

Add conditional skip for Jenkins only with explanation

Rename the test_pyramids as test_omero_pyramids

test_api_rois.py checks load_shapes includes externalInfo

Fix test_pyramids.py little_endian - wait until the pyramid is really written

Fix big_endian just like the little endian

Refactor big endian to pass flake8

Refactor, introduce common wait_for_pyramids method