Docstrings formatted according to pep257

Bug #1020184

quantum/tests/*

Change-Id: I5c31a70e80c7fd448b92b43d34341301533b59ba
Docstrings formatted according to pep257

Bug #1020184

quantum/plugins/cisco/*

Change-Id: Ibb6a865a17de0ea4f1865972624e4c5da0e96b34
Merge "Docstrings formatted according to pep257"