Add --no-ssl-peer-verification option

This allows WinRM to work over HTTPS, when the target node is
using a self-signed cert, or using a certificate that doesn't
match the host name, etc.

Works with commits to the WinRM (https://github.com/gswallow/WinRM/commit/f4ece4384df2768bc7756c3c5c336db65b05c674) and em-winrm (https://github.com/gswallow/em-winrm/commit/75eb847c6b2cdf09b6c6e7b4cfa3f69d9c45f47a) gems.