replace validate_legacy with proper data types

the validate_legacy function is marked for deprecation in
v9.0.0 from puppetlabs-stdlib.

This also adds the type enforcement about purge_config which accepts
only boolean values.

Change-Id: I243572f19564a18003c3de66c1248f0f215bae65

puppet-{{cookiecutter.project_name}}/manifests/config.pp

@@ -21,12 +21,10 @@
 #   or Puppet catalog compilation will fail with duplicate resources.
 #
 class {{cookiecutter.project_name}}::config (
-  ${{cookiecutter.project_name}}_config = {},
+  Hash ${{cookiecutter.project_name}}_config = {},
 ) {
 
   include {{cookiecutter.project_name}}::deps
 
-  validate_legacy(Hash, 'validate_hash', ${{cookiecutter.project_name}}_config)
-
   create_resources('{{cookiecutter.project_name}}_config', ${{cookiecutter.project_name}}_config)
 }

puppet-{{cookiecutter.project_name}}/manifests/db/mysql.pp

@@ -34,7 +34,7 @@
 #   Defaults to 'utf8_general_ci'
 #
 class {{cookiecutter.project_name}}::db::mysql(
-  $password,
+  String[1] $password,
   $dbname        = '{{cookiecutter.project_name}}',
   $user          = '{{cookiecutter.project_name}}',
   $host          = '127.0.0.1',
@@ -45,8 +45,6 @@ class {{cookiecutter.project_name}}::db::mysql(
 
   include {{cookiecutter.project_name}}::deps
 
-  validate_legacy(String, 'validate_string', $password)
-
   ::openstacklib::db::mysql { '{{cookiecutter.project_name}}':
     user          => $user,
     password      => $password,

puppet-{{cookiecutter.project_name}}/manifests/policy.pp

@@ -48,18 +48,16 @@
 class {{cookiecutter.project_name}}::policy (
   $enforce_scope        = $facts['os_service_default'],
   $enforce_new_defaults = $facts['os_service_default'],
-  $policies             = {},
+  Hash $policies        = {},
   $policy_path          = '/etc/{{cookiecutter.project_name}}/policy.yaml',
   $policy_default_rule  = $facts['os_service_default'],
   $policy_dirs          = $facts['os_service_default'],
-  $purge_config         = false,
+  Boolean $purge_config = false,
 ) {
 
   include {{cookiecutter.project_name}}::deps
   include {{cookiecutter.project_name}}::params
 
-  validate_legacy(Hash, 'validate_hash', $policies)
-
   $policy_parameters = {
     policies     => $policies,
     policy_path  => $policy_path,