LMS-2226 Update importers to current bundle structure.

...isd/cina/shared/metadata/CollectionMetadataExtractor.java

...a/dss/bundle/registrators/CinaBundleRegistrationTest.java

...cisd/cina/shared/metadata/ImageMetadataExtractorTest.java

...icTest/Test.dm3/Representations/StandardPreview_large.png

...icTest/Test.dm3/Representations/StandardPreview_small.png

...a/Test.bundle/Annotations/ReplicTest/Test.dm3/browser.xml

.../Test.bundle/Annotations/ReplicTest/Test.dm3/embedded.xml

.../Test.bundle/Annotations/ReplicTest/Test.dm3/metadata.xml

...cTest/Test2.dm3/Representations/StandardPreview_large.png

...cTest/Test2.dm3/Representations/StandardPreview_small.png

.../Test.bundle/Annotations/ReplicTest/Test2.dm3/browser.xml

...Test.bundle/Annotations/ReplicTest/Test2.dm3/embedded.xml

...Test.bundle/Annotations/ReplicTest/Test2.dm3/metadata.xml