Add Support for Microsoft's OpenJDK package

https://www.microsoft.com/openjdk

This task adds Microsoft's openjdk as a new package for PKB.

Download openjdk and play around
Create a new package called openjdk_msft.py in linux_packages.
create a new function, Install, that takes a vm as an input and installs openjdk_msft on that vm. You should be able to wrap shell commands as vm.RemoteCommand