D16560: create a separate test file for embedded images test

[Alexander Stippich]

astippich added a dependent revision: D16617: fix extraction of GPS altitude 
for exif data.

REPOSITORY
  R286 KFileMetaData

BRANCH
  cover_jpg

REVISION DETAIL
  https://phabricator.kde.org/D16560

To: astippich, bruns
Cc: kde-frameworks-devel, #baloo, ashaposhnikov, michaelh, astippich, spoorun, 
ngraham, bruns, abrahams