Tails Installer rejects working USB drives, pretending they're not "removable"

Originally created by @goupille on #12696 (Redmine)

there are multiple reports about usb sticks working “flawlessly” before, or know as removable, that are now considered by tails installer as non removable.

a user gave us these links :

http://storaged.org/doc/udisks2-api/latest/gdbus-org.freedesktop.UDisks2.Drive.html#gdbus-property-org-freedesktop-UDisks2-Drive.MediaRemovable

and

http://storaged.org/doc/udisks2-api/latest/gdbus-org.freedesktop.UDisks2.Drive.html#gdbus-property-org-freedesktop-UDisks2-Drive.Removable

Tails installer seems to search for a “mediaremovable” flag instead of “removable” wrongly detect removable devices as non-removable.

Feature Branch: bugfix/12696-too-strict-removable-check

Related issues

• Related to #10731 (closed)
• Has duplicate #12697 (closed)