NAS-128390 / 24.10.2 / Adjust children selection options for draid pools

[RehanY147]

Changes:

Adjusts min allowed child count when creating dRaid pools

Testing:

The children select's minimum value when creating a draid pool should be calculated based on this formula

max = Math.min(maxAvailableDisks, 255)
parity = 1 if dRaid1, 2 if dRaid2, 3 if dRaid3
min = (data vdev disks) + (hot spares count) + parity

[bugclerk]

Jira URL: https://ixsystems.atlassian.net/browse/NAS-128390

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Please upload report for BASE (stable/electriceel@6a57500). Learn more about missing BASE report.

Additional details and impacted files

@@                  Coverage Diff                  @@
##             stable/electriceel   #11119   +/-   ##
=====================================================
  Coverage                      ?   79.96%           
=====================================================
  Files                         ?     1573           
  Lines                         ?    51467           
  Branches                      ?     5939           
=====================================================
  Hits                          ?    41154           
  Misses                        ?    10313           
  Partials                      ?        0           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[RehanY147]

Backport

[bugclerk]

Unable to backport: no backport-* labels found.

[undsoft]

I don't think we need this in Electric Eel.