simplified toggle logic: self_test param found/not found

Author: gschmidt

lib/puppet/provider/onedatastore/cli.rb

@@ -62,11 +62,13 @@ def create
   end
 
   def post_validate_change
-    self.debug "post_validate_change: #{resource[:self_test]}"
-    if resource[:self_test].to_s == 'false'
+    unless resource[:self_test]
+      self.debug ":self_test not defined"
       return
     end
 
+    self.debug ":self_test defined"
+
     [1..3].each do
       if is_status_success?
         break