Respect ensure when managing xtrabackup backup package

Author: milad-zanganeh

manifests/backup/xtrabackup.pp

@@ -35,7 +35,7 @@
   String[1]                                     $backupmethod_package     = $mysql::params::xtrabackup_package_name,
   Array[String]                                 $excludedatabases = [],
 ) inherits mysql::params {
-  stdlib::ensure_packages($backupmethod_package)
+  stdlib::ensure_packages($backupmethod_package, { 'ensure' => $ensure })
 
   $backuppassword_unsensitive = if $backuppassword =~ Sensitive {
     $backuppassword.unwrap