Allocate more disk space for node1

The node1 node is supposed to become the controller
node, and it needs more disk space for cinder-volumes
and possibly glance images.
Set intended_role to controller for first node

The first node should simply be always the controller
node, so set the intended_role accordingly.
add tempestoptions to fine-tune options passed to run_tempest.sh

This way Jenkins jobs can overwrite the particular tempest
options that are set on the run, for example to be able
to run full tempest runs instead of smoke runs.
Fix enablement of Swift extensions

They all need keystone_delayed_auth to be enabled first.