Revert "NXP-7667 update test"

This reverts commit 8d07005b3ba5693a3782ff27450f30e62b3ea9b6.
Revert "NXP-7667 refactor test"

This reverts commit 21f59f0260deec74707d675246beb67076dd38d1.
Revert "Merge branch 'FEATURE-5.6.0-NXP-7667-Add-ETag-on-nxbigfile-servlet' of github.com:toweins/nuxeo-services into toweins-FEATURE-NXP-7667-Add-DownloadServlet-ETag-Test"

This reverts commit 10023e5b9353776475e13928fef12957a1cd9b3f, reversing
changes made to a5285b369b19044d63a9dca8a60b38cf864ba242.