Increasing the granularity of VM name by adding time to allow
multiple independent instances to created at the same time.
Extending localrc to allow git repositories to be overridden to allow use of
forks and branches. In localrc set

export SWIFT_REPO=git://github.com/openstack/swift.git
export SWIFTCLIENT_REPO=git://github.com/openstack/python-swiftclient.git
export SWIFTBENCH_REPO=git://github.com/openstack/swift-bench.git

To select a specific branch (you will need to use quotes) e.g.
export SWIFT_REPO="-b feature/ec git://github.com/openstack/swift.git"