This creates a macro for the UUID length used by Greentea. This cuts
down on the use of "magic numbers" in test cases that use
the GREENTEA_SETUP_UUID function.
This matches the timeout used in linux:
https://linux.die.net/man/5/dhclient.conf
This resolves several issues noticed during testing when we
have a very large number of devices that try to get an IP address
around the same time.
Before, the UDP test was very strict on the number of packets it would
try to match before failing. Now it will keep trying for the whole test
to get enough passing packets. It also includes the test's UUID so you
can validate which packets are being received.
Sometimes when under heavy load, the CI machines can take a significant
amount of time to bring up a python process (~10s). The timeouts for
the network tests were chosen without much thought, and didn't leave
much room for this sort of delay.
This patch brings up timeouts for ntetwork tests 20s -> 60s
Attempt to maximize the devices bandwidth with an exponentially growing
transaction of random sequences. Also prints the time taken and bandwidth
reached during the tests.
Brian Daniels
Christopher Haster