#1346 - Update deprecated shell_escape function

For stdlib 9.x and later, the shell_escape function has been moved to stdlib::shell_escape.

This change breaks compatiblity with stdlib 8.x

Author: Jory Osterptak

manifests/init.pp

@@ -284,7 +284,7 @@
   contain systemd::install
 
   if $default_target {
-    $target = shell_escape($default_target)
+    $target = stdlib::shell_escape($default_target)
     service { $target:
       ensure => 'running',
       enable => true,