Improves the parsing way of ssh returns

Huawei driver failed to parse ssh result when firstly logging
in storage system on paramiko 1.8.0. The update of paramiko
make the order of ssh returns changed. This patch improves
the parsing way of ssh returns.

This patch also does some changes for log punctuations.

fixes bug 1224499
Change-Id: Ia8761081dff998884f45312355b62aa27ab5417c
Merge "Improves the parsing way of ssh returns"