We can simplify and refactor swift_rings.py and swift_rings_check.py by
moving to a "FULL_HOST_KEY" model where we simply compare the full
string, rather than individual elements.
To do this we need to adjust the contents template to use the same field
values as used by swift:
* rename repl_ip to replication_ip
* rename repl_port to replication_port
Additionally, this allows us the ability to change port values on the
fly, by adjusting the "DEVICE_KEY" to only be the IP and device name the
port will now automatically get changed if the service port changes.
This is a precursor to adjusting the default swift storage service ports
to match upstream defaults, and will reduce the upgrade impact of that
task.
Change-Id: I704edcba4facb2170990ebec2a67d4179a023fc2
750ccaa9e8