Fixed Bug: 1042112

I have tried to incorporate the feature mentioned on bugzilla about taking password argument from a file . 
This is invalid syntax. Each string portion needs to be within single quotes, such as:

```python
    description='Trigger Jenkins jobs for all builds between revisions.'
    'Optionally, the arguments can be provided through a configuration'
    'file b2ghaystack.conf')

Also please remove the trailing space.