authorization property: add extended read support

This authorization requires the extended read permission plugin:
https://wiki.jenkins-ci.org/display/JENKINS/Extended+Read+Permission+Plugin

Include test for the authorization properties.

Change-Id: I9364524398f4e3f0d6ccccd88d5046e7504e2123
Signed-off-by: Fathi Boudra <fathi.boudra@linaro.org>
Merge "authorization property: add extended read support"