Add slavescript to grab console log

The console logs are at
http://buildserver/jenkins/job/MyJobName/666/consoleText

Add in a shell script to grab the console log using $BUILD_URL
(https://wiki.jenkins-ci.org/display/JENKINS/Building+a+software+project#Buildingasoftwareproject-JenkinsSetEnvironmentVariables)

Change-Id: I481fdec77d42918a68ba13645912704948f86a36
Merge "Add slavescript to grab console log"