Remove EXIF data from existing uploads
Related to https://gitlab.com/gitlab-org/gitlab-ce/issues/55469
Except from removing EXIF from any new uploads we should also removing EXIF data from existing uploads.
Possible solution:
create a background migration (or rake task) which will select all uploads which have path
matching .(jpg|jpeg|tiff)
suffix, fetch these uploads, remove EXIF data (mini_magick gem can do this) and write data back again to the original location
Note that issue should be release in the same release as https://gitlab.com/gitlab-org/gitlab-ce/issues/55469 because it's a security issue.
Downstream issue: https://dev.gitlab.org/gitlab/gitlabhq/issues/2810
/cc @dappelt @smcgivern
Edited by Jan Provaznik