Making backupkeytype = false by default to avoided blank keytype

manifests/dup.pp

@@ -79,7 +79,7 @@ define backupninja::duplicity( $order  = 90,
                                $destuser      = false,
                                # configs to backupninja client
                                $backupkeystore       = false,
-                               $backupkeytype        = '',
+                               $backupkeytype        = false,
                                # options to backupninja server sandbox
                                $ssh_dir_manage       = true,
                                $ssh_dir              = false,

manifests/rdiff.pp

@@ -25,7 +25,7 @@ define backupninja::rdiff(
                "/home", "/usr/local/*bin", "/var/lib/dpkg/status*" ],
   $vsinclude = false, $keep = 30, $sshoptions = false, $options = false, $ssh_dir_manage = true,
   $ssh_dir = false, $authorized_keys_file = false, $installuser = true, $installkey = true,
-  $backuptag = false, $home = false, $backupkeytype = '')
+  $backuptag = false, $home = false, $backupkeytype = false)
 {
   include backupninja::client