[HOTFIX] Fix how params dict is passed to request()

The params dict was being passed as a kwargs parameter (`**params`)
rather than as a kwarg itself (e.g., `params=params`).  As a result,
the change in the `request()` method was passing each of the parameters
intended for the YARN RM as keyword arguments to the `requests()` method
itself.  This produced the following error on such requests...

```
<class 'TypeError'> - 'request() got an unexpected keyword argument
'startedTimeBegin'
```

resulting in failures in `0.3.4`.

Author: kevin-bates

yarn_api_client/resource_manager.py

@@ -135,7 +135,7 @@ def cluster_applications(self, state=None, final_status=None,
 
         params = self.construct_parameters(loc_args)
 
-        return self.request(path, **params)
+        return self.request(path, params=params)
 
     def cluster_application_statistics(self, state_list=None,
                                        application_type_list=None):
@@ -174,7 +174,7 @@ def cluster_application_statistics(self, state_list=None,
             ('applicationTypes', application_types))
         params = self.construct_parameters(loc_args)
 
-        return self.request(path, **params)
+        return self.request(path, params=params)
 
     def cluster_application(self, application_id):
         """