Use constants instead of strings for register_policy

config/local-sample.config.php

@@ -34,7 +34,7 @@ return [
 	'config' => [
 		'admin_email' => '',
 		'sitename' => 'Friendica Social Network',
-		'register_policy' => 'REGISTER_OPEN',
+		'register_policy' => REGISTER_OPEN,
 		'register_text' => '',
 	],
 	'system' => [

config/settings.config.php

@@ -19,7 +19,7 @@ return [
 		// Your choices are REGISTER_OPEN, REGISTER_APPROVE, or REGISTER_CLOSED.
 		// Be certain to create your own personal account before setting REGISTER_CLOSED.
 		// REGISTER_APPROVE requires you set system.admin_email to the email address of an already registered person who can authorize and/or approve/deny the request.
-		'register_policy' => 'REGISTER_CLOSED',
+		'register_policy' => REGISTER_CLOSED,
 
 		// register_text (String)
 		// Will be displayed prominently on the registration page.

tests/src/Core/Console/AutomaticInstallationConsoleTest.php

@@ -209,7 +209,7 @@ return [
 	'config' => [
 		'admin_email' => '',
 		'sitename' => 'Friendica Social Network',
-		'register_policy' => 'REGISTER_OPEN',
+		'register_policy' => REGISTER_OPEN,
 		'register_text' => '',
 	],
 	'system' => [

util/local.config.vagrant.php

@@ -31,7 +31,7 @@ return [
 	'config' => [
 		'admin_email' => 'admin@friendica.local',
 		'sitename' => 'Friendica Social Network',
-		'register_policy' => 'REGISTER_OPEN',
+		'register_policy' => REGISTER_OPEN,
 		'register_text' => '',
 	],
 	'system' => [

view/templates/local.config.tpl

@@ -24,7 +24,7 @@ return [
 		'php_path' => '{{$phpath}}',
 		'admin_email' => '{{$adminmail}}',
 		'sitename' => 'Friendica Social Network',
-		'register_policy' => 'REGISTER_OPEN',
+		'register_policy' => REGISTER_OPEN,
 		'max_import_size' => 200000,
 	],
 	'system' => [