Fix failing tree_builder_sections_spec

[mzazrivec]

This is to fix the following CI failure:

1) TreeBuilderSections TreeBuilderSections sets roots correctly
     Failure/Error:
       expect(roots).to eq([{:id         => "group_Properties",
                             :text       => "Properties",
                             :tip        => "Properties",
                             :image      => false,
                             :selectable => false,
                             :nodes      => [{:name => :_model_, :header => "Filesystem", :group => "Properties"}]}])
     
       expected: [{:id=>"group_Properties", :image=>false, :nodes=>[{:group=>"Properties", :header=>"Filesystem", :name=>:_model_}], :selectable=>false, :text=>"Properties", :tip=>"Properties"}]
            got: [{:id=>"group_Properties", :image=>false, :nodes=>[{:group=>"Properties", :header=>"File", :name=>:_model_}], :selectable=>false, :text=>"Properties", :tip=>"Properties"}]
     
       (compared using ==)
     
       Diff:
       @@ -1,6 +1,6 @@
        [{:id=>"group_Properties",
          :image=>false,
       -  :nodes=>[{:group=>"Properties", :header=>"Filesystem", :name=>:_model_}],
       +  :nodes=>[{:group=>"Properties", :header=>"File", :name=>:_model_}],
          :selectable=>false,
          :text=>"Properties",
          :tip=>"Properties"}]
       
     # ./spec/presenters/tree_builder_sections_spec.rb:74:in `block (3 levels) in <top (required)>'
  2) TreeBuilderSections TreeBuilderSections sets children correctly
     Failure/Error:
       expect(kids).to eq([{:id         => "group_Properties:_model_",
                            :text       => "Filesystem",
                            :tip        => "Filesystem",
                            :image      => false,
                            :selectable => false,
                            :checked    => true,
                            :nodes      => []}])
     
       expected: [{:checked=>true, :id=>"group_Properties:_model_", :image=>false, :nodes=>[], :selectable=>false, :text=>"Filesystem", :tip=>"Filesystem"}]
            got: [{:checked=>true, :id=>"group_Properties:_model_", :image=>false, :nodes=>[], :selectable=>false, :text=>"File", :tip=>"File"}]
     
       (compared using ==)
     
       Diff:
       @@ -3,6 +3,6 @@
          :image=>false,
          :nodes=>[],
          :selectable=>false,
       -  :text=>"Filesystem",
       -  :tip=>"Filesystem"}]
       +  :text=>"File",
       +  :tip=>"File"}]
       
     # ./spec/presenters/tree_builder_sections_spec.rb:85:in `block (3 levels) in <top (required)>'

coming from ManageIQ/manageiq#20361

[miq-bot]

Checked commit mzazrivec@5ff6ab7 with ruby 2.5.7, rubocop 0.69.0, haml-lint 0.28.0, and yamllint
1 file checked, 0 offenses detected
Everything looks fine. 🏆

[skateman]

[simaishi]

Jansa backport details:

$ git log -1
commit 3f91c34a3bb390757a0addf4429889dc369dddbc
Author: Halász Dávid <skateman@users.noreply.github.com>
Date:   Fri Jul 17 10:23:23 2020 +0200

    Merge pull request #7214 from mzazrivec/fix_failing_ci_in_tree_builder_sections_spec

    Fix failing tree_builder_sections_spec

    (cherry picked from commit 682a5dd95cdca9a8e5974a9a3ab3367751c66e4c)

[bdunne]

Should https://github.com/ManageIQ/manageiq/blob/f8452000ba72ef6b72c49a85cf5532e5c17b4f4a/locale/en.yml#L736 have been changed instead?