Add PSRP Support

[jborean93]

This is a pretty big PR so I am all open to suggestions to make it as smooth as possible. This PR brings in the following options/changes

• Deprecated the protocol class, kept it there for compatibility with older version
• Deprecated the plaintext and ssl auth options to make things simpler and less confusing
• Added a client and their subclasses PsrpClient and WsmvClient which replaces the Protocol classes functions
• Added support for sending Powershell commands over PSRP and various options like pipeline input and retrieving extra powershell streams
• Tidied up the Session class to be a bit more straight forward and have error handling
• Some other PRs I've seen like adding proxy and Kerberos service name support
• Added lots more tests to cover what I changed and added
• Updated the README with lots more info

Things I know I have broken and am open to how we deal with this

• Session no longer return std_out, std_err and status_code but rather a custom class with
  • stdout
  • stderr
  • return_code
  • (PSRP Only) output, verbose, debug, warning, information and error streams as separate objects
• Session now defaults to a https endpoint unless otherwise specified
• Probably more that I am forgetting

[jborean93]

@nitzmahone here is the big beast, appreciate you have limited time but I am happy to work with you to get this release ready and ensure it doesn't negatively impact downstream projects. Let me know your thoughts on all this when you can.

Edit: I'm not sure if you can do this but I was also wondering if you could add me as a maintainer of this repo so I am can go through issues and PRs once this is all done.

[coveralls]

Coverage increased (+27.2%) to 95.102% when pulling b3a47fe on jborean93:psrp into 09a81d5 on diyan:master.

[coveralls]

Coverage increased (+27.9%) to 95.773% when pulling e4d5e27 on jborean93:psrp into 09a81d5 on diyan:master.

[nitzmahone]

@jborean93 Daaaang, you've been busy. :) I've blocked out a half day on April 3 (hopefully Ansible stuff will be down to a smolder by then) to just focus on your NTLM encryption PR and this PR. Looks great at first glance, but obviously with something this large, the devil's in the details...

[jborean93]

A lot of banging my head against the wall due to really crappy logging on Microsoft's part and just unexplained occurrences of Shell's disappearing but I got there in the end :). I left the encryption stuff out of this PR as I wasn't sure what will eventually change when you get time to have a look through it and didn't want to add any more complexity to this than what is already there.

I'm also currently spiking out a new python library solely for transferring and receiving files so non-Ansible users can have that ability. So far it seems quick but haven't compared to the current Ansible timings and have come across a weird issue with files > 30MB due to MaximumReceivedDataSizePerCommandMB and no documents on how to override this.

[jborean93]

After a lot of time, I finally created another library without the shackles of backwards compatibility with pywinrm here https://github.com/jborean93/pypsrp. Feel free to have a closer look at that if you are interested.