Add basic support for ssh on Windows

[laurentganne]

As Windows Server 2019 can now have openssh easily configured, as described at https://docs.microsoft.com/en-us/windows-server/administration/openssh/openssh_install_firstuse
minor modifications could allow Yorc to run windows scripts through ansible using ssh on Windows

Enhancement needed in project LEXIS, where a powershell script for Air Quality simulations should be run on a Windows host