[FIXES #6970]: Revert nopt dependency update

[calderas]

Revert nopt dependency update.
Adds a unit test to prevent updating to 4.x before it's fixed upstream.

Currently, 4.0.1 will fail

1) models/command.js parseArgs() should parse string options.:
   AssertionError: expected { Object (options, args) } to have a deep property 'options.options' of '--split 2 --random', but got ''
    at Context.<anonymous> (tests/unit/models/command-test.js:165:34)

Fixes #6970

[stefanpenner]

@calderas awesome!

This looks like it has been an issue since v2.12.0 stable. As 2.13 is coming out shortly, we may want to try and get this in asap @Turbo87 mind evaluating or handling that?.

introduced: ff0b96e

[rwjblue]

Change the target branch of this PR to point at release, then it will be pulled in and ready for a 2.12 release. TBH I'm not sure if it is worth a separate 2.12.x when 2.13.0 is imminent...

[stefanpenner]

TBH I'm not sure if it is worth a separate 2.12.x when 2.13.0 is imminent...

Sounds good.

@calderas do you mind changing the branch to release (likely requires a cherry pick). That way we can get it out in the 2.13 release.

[calderas]

Updated