None matching mokutils passwords

This bug has been reported on the Ubuntu ISO testing tracker.

A list of all reports related to this bug can be found here:
http://iso.qa.ubuntu.com/qatracker/reports/bugs/1560940

I think the reason that this is actually happening is that this password is less than 8 characters. The secure boot plugin enforces that you have at least 8 characters but doesn't tell you in the U/I about this.

the validation for strength (human_password_strength) only enforces that the password be greater than 6 characters.

Indeed but then the error message is wrong, they are both short but they match. It should throw up a TOO SHORT warning not don't match.

mokutil has a requirement of a length of 8.

The easiest solution here is to just set human_password_strength's too short to something less than 8. the implication for that is that on partman a password less than 8 won't be accepted for crypto (whereas previously it would have).

Fixing the prompts to show "Short password" (which should already be translated but somehow didn't show up) if the password length is less than 8, and I capped the size to 16 characters since this is also the maximum for mokutil.

This bug was fixed in the package ubiquity - 2.21.57

---------------
ubiquity (2.21.57) xenial; urgency=medium

  [ Mathieu Trudel-Lapierre ]
  * Automatic update of included source packages: localechooser
    2.65ubuntu4. (LP: #1551285)
  * scripts/simple-plugins: better handle passing the MokPW key to mokutil
    and the result from the command -- we explicitly can ignore errors here.
    (LP: #1567445)
  * plugin-viewer-gtk.py: fix plugin-viewer-gtk to allow showing most plugins
    correctly; useful for debugging.
  * ubiquity/plugins/ubi-prepare.py: rework password validation behavior for
    MokPW without changing user-visible strings: we only need to show feedback
    for a "good" password (of the allowable lengths), and correct the behavior
    for mismatched passwords. Also make it obvious if the chosen password is
    too short. (LP: #1560940)

  [ Shih-Yuan Lee (FourDollars) ]
  * Really make oem-config-prepare quiet when started by a non-priviledged
    user.

 -- Mathieu Trudel-Lapierre <email address hidden> Wed, 13 Apr 2016 14:36:37 -0400