This is mainly for ppetit so he can create multiple
resources with one stack.
Use like this:
heat create lots -f ./templates/ppetit.template --parameters="KeyName=${USER}_key;NumInstances=2"
Change-Id: Ie609a1843c855953d65183a8f2d8ed49254a265f
Signed-off-by: Angus Salkeld <asalkeld@redhat.com>