Some VeraCrypt volumes require admin password to unlock

Multiple users reported that they were prompted for an admin password when they unlocked their VeraCrypt volumes:

• https://mailman.boum.org/pipermail/tails-testers/2018-July/001051.html
• https://mailman.boum.org/pipermail/tails-testers/attachments/20180726/10d81d03/attachment.html
• https://mailman.boum.org/pipermail/tails-testers/2018-August/001109.html
• https://mailman.boum.org/pipermail/tails-testers/2018-September/001157.html

Parent Task: #14480 (closed)

Related issues

• Related to #15733 (closed)

Original created by @segfault on 15757 (Redmine)