Add functionality to select PTY options for global SSH setting.

I tested some sever environment and my test result for PTY is in below.
* CentOS 5.5 (Vagrant) : Deploy succeed when PTY is True
* CentOS 5.6 (Vagrant) : Deploy succeed both PTY True/False
* CentOS 6.5 (Vagrant) : Deploy succeed when PTY False
* Ubutntu 12.04 (Vagrant) : Deploy succeed both PTY True/False
Bug Fix for white space on host name section
Version update for 0.0.5
Merge pull request #11 from jenkinsci/0.0.5

0.0.5