Fix invalid port range in security group rule create

An earlier commit introduced a change that creates security groups. In
the rules for tcp and udp, ports 1-65536 are allowed. This is
incorrect, it should be 1-65535.

This patch corrects this error.

Closes-Bug: #1264635
Change-Id: I83a7471ebf6d3d3bfeff6b16a051880d876370b1
Benchmark scenarios for Rally: run task in instance

This patch allows a user to define a scenario where Nova instances are
created, then a script which outputs arbitrary JSON is run, and then the
instance is destroyed.

This allows tests/benchmarks from the instance perspective, as well as
from OS APIs.

blueprint benchmark-scenarios

Change-Id: I4b1f77f5f8c55fe1da41b6ab0b23eb03303ba95f