--log-file LOG_FILE option does not work with designate cli commands

[sonu]

while using --log-file option with designate cli we get an empty log file.

Output does not get logged into the specified file.

The bug can be reproduced as follows:

$ designate --log-file output.log domain-create --name vyom1.org. --email <email address hidden>

+-------------+--------------------------------------+
| Field | Value |
+-------------+--------------------------------------+
| description | None |
| created_at | 2015-11-03T10:14:33.000000 |
| updated_at | None |
| email | <email address hidden> |
| ttl | 3600 |
| serial | 1446545673 |
| id | 61399d8a-6e37-4f46-8416-ea79660b39f8 |
| name | vyom1.org. |
+-------------+--------------------------------------+

$ ls -l output.log
-rw-rw-r-- 1 vyom vyom 0 Nov 3 05:14 output.log

[Tim Simmons (timsim)]

The --log-file isn't for output of commands, it's for the client's actual logs.