Update the README and CONTRIBUTING .rst docs to reflect new location
for bugs.
Change-Id: I119cb391270470c8e22bc8ac3358691319d5b1ec
Story: 2005131
Task: 29815
The cookiecutter template includes more documentation than we
need, so remove lots of extraneous stuff and lay in the basics.
Change-Id: I6ed22f70153b00844e8de05d186ecc780debc48c