Hotfix on pem key authentication. Also, Updated exception class.

[senderic]

• Swapped lines loading private key and connection appears to work now
• Updated exceptions to see more detailed stacktrace.
• Implementing integration test classes
• Bumped version to 2.1.1.3 to distinguish in nexus

[senderic]

I just added a function to run <get> netconf calls. I lumped it in here.

[senderic]

I agree - I will update the error message and also remove my IT folder. I can keep that stuff on my local repo, no need to bother this one :)

[ydnath]

@esend7881 @peterjhill is this good for merging (are all the review comments incorporated)?