autorole: Avoid problems with future parser

Facts are not comparable to integers, they are strings...

manifests/roles/autorole.pp

@@ -12,8 +12,10 @@ class icinga2_testing::roles::autorole
     $repo_version = hiera('icinga2_testing::profiles::repository::version')
 
     if $::icingatest_role == 'master' {
+      validate_integer($::icingatest_hostno)
+
       include ::icinga2_testing::roles::master
-      if $::icingatest_hostno == 1 {
+      if $::icingatest_hostno == '1' or $::icingatest_hostno == 1 {
         include ::icinga2_testing::roles::master_config
       }
     }