This commit adds the parameter proxy_local_net_ip to
the swift::proxy class for the all in one example.
This parameter had been changed to be required in a previous commit,
but the example had not been updated.
Previously, all of the storage server types
(account, container, proxy) were always
configured to be installed on the same node.
It often makes sense to only have the account and
container together, and to put the object server on
a different node. (or its possible that other
configurations make sense)
This commit refactors the swift module so that
each of the types of nodes can be built
independently of each other.
