Updating how to run commands in check mode, standarizing quotes

rabbitmq_plugin

@@ -54,23 +54,21 @@ examples:
 class RabbitMqPlugins(object):
     def __init__(self, module):
         self.module = module
-        self._rabbitmq_plugins = module.get_bin_path("rabbitmq-plugins", True)
+        self._rabbitmq_plugins = module.get_bin_path('rabbitmq-plugins', True)
 
-    def _exec(self, args):
+    def _exec(self, args, run_in_check_mode=False):
         cmd = [self._rabbitmq_plugins]
         rc, out, err = self.module.run_command(cmd + args, check_rc=True)
         return out.splitlines()
 
     def get_all(self):
-        return self._exec(["list", "-E", "-m"])
+        return self._exec(['list', '-E', '-m'], True)
 
     def enable(self, name):
-        if not self.module.check_mode:
+        self._exec(['enable', name])
-            self._exec(["enable", name])
 
     def disable(self, name):
-        if not self.module.check_mode:
+        self._exec(['disable', name])
-            self._exec(["disable", name])
 
 def main():
     arg_spec = dict(