test(pkgs_spec): fix latest rubocop violations [skip ci]

```
Offenses:

test/integration/v3000-py2/controls/pkgs_spec.rb:10:5: C: [Correctable]
Style/WordArray: Use ['Salt Minion'] for an array of words.
(https://rubystyle.guide#percent-w)
    %w[Salt\ Minion]
    ^^^^^^^^^^^^^^^^
test/integration/v3000-py3/controls/pkgs_spec.rb:10:5: C: [Correctable]
Style/WordArray: Use ['Salt Minion'] for an array of words.
(https://rubystyle.guide#percent-w)
    %w[Salt\ Minion]
    ^^^^^^^^^^^^^^^^
test/integration/v3001-py3/controls/pkgs_spec.rb:10:5: C: [Correctable]
Style/WordArray: Use ['Salt Minion'] for an array of words.
(https://rubystyle.guide#percent-w)
    %w[Salt\ Minion]
    ^^^^^^^^^^^^^^^^
test/integration/v3002-py3/controls/pkgs_spec.rb:10:5: C: [Correctable]
Style/WordArray: Use ['Salt Minion'] for an array of words.
(https://rubystyle.guide#percent-w)
    %w[Salt\ Minion]
    ^^^^^^^^^^^^^^^^
test/integration/v3003-py3/controls/pkgs_spec.rb:10:5: C: [Correctable]
Style/WordArray: Use ['Salt Minion'] for an array of words.
(https://rubystyle.guide#percent-w)
    %w[Salt\ Minion]
    ^^^^^^^^^^^^^^^^

19 files inspected, 5 offenses detected, 5 offenses auto-correctable
```

test/integration/v3000-py2/controls/pkgs_spec.rb

   when /bsd$/
     %w[py38-salt-3002.6]
   when 'windows'
-    %w[Salt\ Minion]
+    ['Salt Minion']
   else
     %w[salt-master salt-minion]
   end

test/integration/v3000-py3/controls/pkgs_spec.rb

   when /bsd$/
     %w[py38-salt-3002.6]
   when 'windows'
-    %w[Salt\ Minion]
+    ['Salt Minion']
   else
     %w[salt-master salt-minion]
   end

test/integration/v3001-py3/controls/pkgs_spec.rb

   when /bsd$/
     %w[py38-salt-3002.6]
   when 'windows'
-    %w[Salt\ Minion]
+    ['Salt Minion']
   else
     %w[salt-master salt-minion]
   end

test/integration/v3002-py3/controls/pkgs_spec.rb

   when /bsd$/
     %w[py38-salt]
   when 'windows'
-    %w[Salt\ Minion]
+    ['Salt Minion']
   else
     %w[salt-master salt-minion]
   end

test/integration/v3003-py3/controls/pkgs_spec.rb

   when /bsd$/
     %w[py38-salt]
   when 'windows'
-    %w[Salt\ Minion]
+    ['Salt Minion']
   else
     %w[salt-master salt-minion]
   end