fixes for getting started lab
fixes for getting started lab

asking user to be in the directory with a pom.xml file
added instructions on how to run tox after maven

Change-Id: I256fd47cde1d0fd42416914b933152b8d77471bc

openstack/training-guides,harrisonfeng/training-guides,Nabs007/training-guides,harrisonfeng/training-guides,Nabs007/training-guides,Nabs007/training-guides,harrisonfeng/training-guides,openstack/training-guides