fix a few bugs

python run.py jenkins-3.11-template jenkins-test no

python run.py linux-next-template linux-next-test yes
use OptionParser in run.py

python run.py --image-name linux-next-template --vm-name linux-next-test --load-kernel --size 1GB
python run.py --image-name jenkins-3.11-template --vm-name jenkins-test