Enable Override of HostName in WSManListener

[PlagueHO]

From Issue #8 raised by @ttdgcp:

I've been testing with the latest version you've released, and am seeing the following error when using a certificate thumbprint:
The WinRM client cannot process the request. The certificate CN and the hostname that were provided do not match.

I am using the following configuration:
Ensure = "Present"
Transport = "HTTPS"
CertificateThumbprint = "$thumbprinthere"

I believe this is because I cannot specify (and write) the HostName parameter that the WinRM client demands. If we could add the hostname parameter to be able to write, I believe that would solve my use case.

We're able to bind the certificate to a WSMan listener with the following command:
New-WSManInstance winrm/config/Listener -SelectorSet @{ Address="*";Transport="HTTPS"} -ValueSet @{Hostname="devOps";CertificateThumbprint=$thumbprint}

It's certainly a bit unorthodox, but it fits our use case.

Let me know if I can help any further- thank you for supporting this!

[PlagueHO]

@ttdgcp - I've released this to the PSGallery now as version 2.2.0.84:
https://www.powershellgallery.com/packages/WSManDsc/2.2.0.84

Check in the Wiki for examples of how to use this:
https://github.com/PlagueHO/WSManDsc/wiki/WSManListener#example-5