42 - Adding the new method for returning the proxy connection details as encrypted byte array

[SivaTharun]

Overview

Fixes #42 , adding the new method for returning the proxy connection details as encrypted byte array

Notes

• added ProxyHandler.createProxyRequestStream method to address the problem described, that returns proxy connection
  details as encrypted byte array
• added unit test for the above method , to verify the same.

Testing Instructions

• Run mvn:verify command, to run the tests and check for any checkstyle and spotbugs issues.

[conniey]

@SivaTharun Hey,

1. Can you add import java.nio.charset.StandardCharsets; to ProxyHandlerImpl to fix the CI failure?
2. Can you update eng/spotbugs/spotbugs-excludes.xml to remove this suppression?

I tried to resolve the issues myself, but I can't push to your branch with the fixes.

Thanks! (Apologies. I realise this PR has been out... a long time.)