Move group_limit & group_wait under boot

Also make formatting the group strategy the responsibility of the
commander.

lib/mrsk/cli/app.rb

@@ -13,7 +13,7 @@ class Mrsk::Cli::App < Mrsk::Cli::Base
           execute *MRSK.app.tag_current_as_latest
         end
 
-        on(MRSK.hosts, **MRSK.config.group_strategy) do |host|
+        on(MRSK.hosts, **MRSK.group_strategy) do |host|
           roles = MRSK.roles_on(host)
 
           roles.each do |role|

lib/mrsk/commander.rb

@@ -51,6 +51,14 @@ class Mrsk::Commander
     end
   end
 
+  def group_strategy
+    if config.boot.group_limit.present?
+      { in: :groups, limit: config.boot.group_limit, wait: config.boot.group_wait }
+    else
+      {}
+    end
+  end
+
   def roles_on(host)
     roles.select { |role| role.hosts.include?(host.to_s) }.map(&:name)
   end

lib/mrsk/configuration.rb

@@ -87,6 +87,10 @@ class Mrsk::Configuration
     roles.select(&:running_traefik?).flat_map(&:hosts).uniq
   end
 
+  def boot
+    Mrsk::Configuration::Boot.new(section: raw_config.boot)
+  end
+
 
   def repository
     [ raw_config.registry["server"], image ].compact.join("/")
@@ -153,15 +157,6 @@ class Mrsk::Configuration
   end
 
 
-  def group_strategy
-    if group_limit.present?
-      { in: :groups, limit: group_limit, wait: group_wait }
-    else
-      {}
-    end
-  end
-
-
   def audit_broadcast_cmd
     raw_config.audit_broadcast_cmd
   end
@@ -246,12 +241,4 @@ class Mrsk::Configuration
           raise "Can't use commit hash as version, no git repository found in #{Dir.pwd}"
         end
     end
-
-    def group_limit
-      raw_config.group_limit&.to_i
-    end
-
-    def group_wait
-      raw_config.group_wait&.to_i
-    end
 end

lib/mrsk/configuration/boot.rb

@@ -0,0 +1,9 @@
+class Mrsk::Configuration::Boot
+  attr_reader :group_wait, :group_limit
+
+  def initialize(section:)
+    section = section || {}
+    @group_limit = section["group_limit"]
+    @group_wait = section["group_wait"]
+  end
+end