stack/lamp: fix parameter not defined

stack/lamp/apache.conf.in

@@ -82,7 +82,7 @@ LoadModule rewrite_module modules/mod_rewrite.so
 LoadModule headers_module modules/mod_headers.so
 LoadModule deflate_module modules/mod_deflate.so
 LoadModule filter_module modules/mod_filter.so
-LoadModule php{{ '_module modules/libphp' if parameter_dict['enable-php8'] else '7_module modules/libphp7' }}.so
-{% for module in parameter_dict['php-module-list'].split('\n') -%}
+LoadModule php{{ '_module modules/libphp' if parameter_dict.get('enable-php8') else '7_module modules/libphp7' }}.so
+{% for module in parameter_dict.get('php-module-list', '').split('\n') -%}
 LoadModule {{ module.strip() }}
 {% endfor -%}

stack/lamp/buildout.hash.cfg

@@ -26,7 +26,7 @@ md5sum = de1f450a80547d12334b712016138078
 
 [template-apache.conf]
 filename = apache.conf.in
-md5sum = fe63dd5039428f4ee451bef98ccfaa2e
+md5sum = cb847466e8438df624a8c0387cc78b97
 
 [template-php.ini]
 filename = php.ini.in