Document how to change the password of an encrypted volume

So far we have:

• Create and use encrypted volumes
• Change the passphrase of the persistent volume

But nothing to “Change the passphrase of an encrypted volume”.

Feature Branch: doc/12270-change-password-encrypted-volume

Attachments

• doc_change_passphrase_encrypted_volume.patch
• 0001-Reorder-sections.patch
• 0002-Add-network-wireless-encrypted.png.patch
• 0003-Remove-word-padlock.patch

Related issues

• Blocks #12432 (closed)

Original created by @sajolida on 12270 (Redmine)