Display failure reason.

Author: kwolf

Diff for: lib/puppet_x/wildfly/cli_command.rb

@@ -8,7 +8,7 @@ def initialize(command)
         parser = JBossCLIParser.new
         @syntax_node = parser.parse(command)
 
-        raise "Invalid command syntax. Could not parse: #{command}" if @syntax_node.nil?
+        raise "Invalid command syntax. Could not parse: #{command}\nFailure reason: #{parser.failure_reason}" if @syntax_node.nil?
       end
 
       def address