If running test behide a proxy, we may get the error code
403 Forbidden which will fail line 135 for the last testcase.
Detail:
```
metrics not as expected: notifications.EndpointMetrics{Pending:0,
Events:0, Successes:4, Failures:0, Errors:0,
Statuses:map[string]int{"307 Temporary Redirect":0, "400 Bad Request":0,
"403 Forbidden":0, "200 OK":4}} !=
notifications.EndpointMetrics{Pending:0, Events:0, Successes:4,
Failures:0, Errors:0, Statuses:map[string]int{"400 Bad Request":0, "200
OK":4, "307 Temporary Redirect":0}}
```
Immediate close will fix that
Signed-off-by: Hu Keping <hukeping@huawei.com>
Signed-off-by: Derek McGowan <derek@mcgstyle.net>
efc32091e7