First release to support python3

This release onwards, wrapper supports only python3 and please do not raise if any python2 issues, for
running in python2 use the previous v2.6 or py2-lts branch

Thanks @harish-24 @balamuruhans @narasimhan-v for the contributions and review.

Commit history:
9694afd Update python3 package dependancy
57ad2b8 pci_info: port to python3
0ea0083 Update README to reflect python3 porting
f8bd4de More python3 fixes
98cfb37 avocado-setup: add support for python3
891694a config/wrapper/env.conf: Remove duplicates

Last supported release for python2

This is tagged to get reference the last supported release for python2, later this release wrapper will not run
on python2 enviroment.

v2.5

Test Suite updated to support Host OS Release 2.5 builds

v2.0

Test Suite updated to support Host OS Release 2.0 builds

v1.x

Test Suite created to support Host OS Release 1.0 and 1.5 builds