By default setup.py ignores compilation errorsand proceed with
installation anyway. Make sure that it fails if any errorsis encountered
bymanually call compilation step.
Change-Id: I2235e3fff21b7c09d3fba00ecdccca7f4515e071
Related: OS#2770
* make sure jenkins.sh fails on any errors similar to other jenkins jobs
* always explicitly use python2 instead of generic python
* add basic module import tests for python 2 and 3
* add comments
Change-Id: I0f4639537d227c513859d4552533ce1e41df9deb