Reject empty button groups from the result of #custom_actions

[skateman]

When a button group has only buttons that are hidden by an expression, the empty button group still gets returned by the API and displayed in the SUI. My added reject call drops all button groups from the result of #custom_actions that have been evaluated as hidden.

@miq-bot assign @gtanzillo

https://bugzilla.redhat.com/show_bug.cgi?id=1590764

[miq-bot]

Checked commit skateman@739171c with ruby 2.3.3, rubocop 0.52.1, haml-lint 0.20.0, and yamllint 1.10.0
2 files checked, 3 offenses detected

app/models/mixins/custom_actions_mixin.rb

• ❗ - Line 18, Col 7 - Style/MultilineBlockChain - Avoid multi-line chains of blocks.

spec/models/mixins/custom_actions_mixin_spec.rb

• ❗ - Line 3, Col 15 - Rails/ApplicationRecord - Models should subclass ApplicationRecord.
• ❗ - Line 4, Col 7 - Style/SingleLineMethods - Avoid single-line method definitions.

[gtanzillo]

Looks good 👍

[JPrause]

@miq-bot add_label blocker

[JPrause]

@skateman if this can be backported, can you add the gaprindashvili/yes label

[skateman]

@miq-bot add_label gaprindashvili/yes

[simaishi]

This was pushed to cfme-5.10, removing gaprindashvili/yes flag.