WIP insert a system_role step in the installation (FATE#317481)

https://fate.suse.com/317481

src/Makefile.am

@@ -50,6 +50,7 @@ client_DATA = \
   clients/inst_save_hardware_status.rb \
   clients/inst_scenarios.rb \
   clients/inst_system_analysis.rb \
+  clients/inst_system_role.rb \
   clients/inst_upgrade_urls.rb \
   clients/inst_welcome.rb \
   clients/inst_worker_continue.rb \
@@ -111,6 +112,7 @@ ylib_DATA = \
   lib/installation/proposal_runner.rb \
   lib/installation/proposal_store.rb \
   lib/installation/remote_finish_client.rb \
+  lib/installation/select_system_role.rb \
   lib/installation/snapshots_finish.rb
 
 ylibclientdir = "${yast2dir}/lib/installation/clients"

src/clients/inst_system_role.rb

@@ -0,0 +1,2 @@
+require "installation/select_system_role"
+Installation::SelectSystemRole.new.run

src/lib/installation/select_system_role.rb

@@ -0,0 +1,62 @@
+# encoding: utf-8
+# TODO a cpyright header
+
+require "yast"
+module Installation
+  class SelectSystemRole # < Yast::Client ?
+    include Yast
+    include Yast::I18n
+    include Yast::UIShortcuts
+
+    def initialize
+      textdomain "installation"
+      Yast.import "UI"
+      Yast.import "Wizard"
+
+    end
+
+    def run
+      inst_workflow_navigation
+
+      setup_dialog
+
+      run_dialog
+    end
+
+    def inst_workflow_navigation
+    end
+
+    def setup_dialog
+      radios = RadioButtonGroup(
+        Id(:roles),
+        VBox(
+          RadioButton(Id(:hamlet), _("Hamlet")),
+          RadioButton(Id(:odette), _("Odette")),
+          RadioButton(Id(:gollum), _("Gollum"))
+        )
+      )
+      Wizard.SetContents(
+                         _("Systoem Role"),
+                         radios,
+                         "help is overrated",
+                         true,  # wtf
+                         true   # wtf
+                         )
+    end
+
+    def run_dialog
+      ui = nil
+      loop do
+        ui = UI.UserInput
+
+        ui = :abort if ui == :cancel
+
+        break if ui == :next || ui == :back || ui == :abort
+
+        # handle other ui
+      end
+
+      ui
+    end
+  end
+end