test: standardise use of `share` suite & `_mapdata` state [skip ci]

* Automated using https://github.com/myii/ssf-formula/pull/302

.rubocop.yml

   # Based on https://github.com/PyCQA/flake8-bugbear#opinionated-warnings (`B950`)
   Max: 88
 Metrics/BlockLength:
-  ExcludedMethods:
+  IgnoredMethods:
     - control
     - describe
   # Increase from default of `25`

Gemfile

 # Use the latest version of `inspec` prior to `4.23.4`, which introduces a
 # regression where the diff isn't displayed when comparing using `eq`.
 gem 'inspec',      '~> 4.22.22'
-# Install the `kitchen-docker` gem from GitHub because the latest version
+# Install the `kitchen-docker` gem using `git` because the latest version
 # currently available (`2.10.0`) doesn't include a recent fix for Gentoo.
 # rubocop:disable Layout/LineLength
 gem 'kitchen-docker', git: 'https://gitlab.com/saltstack-formulas/infrastructure/kitchen-docker', branch: 'ssf'

test/integration/default/inspec.yml

   - platform-name: opensuse
   - platform-name: suse
   - platform-name: freebsd
+  - platform-name: openbsd
   - platform-name: amazon
   - platform-name: oracle
   - platform-name: arch

test/integration/share/inspec.yml

   - platform-name: opensuse
   - platform-name: suse
   - platform-name: freebsd
+  - platform-name: openbsd
   - platform-name: amazon
   - platform-name: oracle
   - platform-name: arch

test/integration/share/libraries/system.rb

     case inspec.platform[:name]
     when 'amazon', 'oracle'
       "#{inspec.platform[:name]}linux"
-    when 'windows_8.1_pro', 'windows_server_2019_datacenter'
-      'windows'
+    when /^windows_/
+      inspec.platform[:family]
     else
       inspec.platform[:name]
     end
       '8.1'
     when 'windows_server_2019_datacenter'
       '2019-server'
+    when 'windows_server_2016_datacenter'
+      '2016-server'
     else
       inspec.platform[:release]
     end