Add templates Tox + SonarQube Jenkins plugin

Add templates Tox + SonarQube Jenkins plugin

New templates gerrit-tox-sonarqube and github-tox-sonarqube
use the SonarQube Jenkins plug-in to analyze Python code and
publish the results.  Modeled after the generic gerrit/github-sonar
templates. The new templates eliminate the need for mvn-settings in
the job configuration and the need for a pom.xml file in the repo.

Change-Id: I6d5bc5200937a0230c5d8eb0c522941d2affcee4
Issue-ID: RELENG-2767
Signed-off-by: Lott, Christopher (cl778h) <cl778h@att.com>