install-devstack-xen.sh: Change flavor to m1.tiny
install-devstack-xen.sh: specify bridge compatible network names
install-devstack-xen.sh: change multi host to 1 (should not matter)
install-devstack-xen.sh: get rid of network settings (these are the defaults now)
install-devstack-xen.sh: upload a xenserver image and a three part image
Amdend comment (safe)
Remove memory settings - defaults now work OK