Jenkins on Ubuntu (for python project)

Goal: install Jenkins on Ubuntu 16.04, perform CI practices on two sample projects in c and python.

Steps:

1. install Jenkins
2. setup Jenkins
3. select one simple project on github, make target machine (the same one with Jenkins) ready for git, python:coverage, python:nosetests
4. setup CI, focusing on build/test/report parts
5. summarize and define follow-up items

Reference:
https://wiki.jenkins-ci.org/display/JENKINS/Installing+Jenkins+on+Ubuntu