Add robot options to reduce robot log size
- increase the device increment value so there are less
loops in the test overall.
- use flattenkeywords to remove the logs from the keyword
that is causing a large amount of messages.
Coupled with https://git.opendaylight.org/gerrit/c/integration/test/+/88446
we should not hit the problem where robot is getting OOM killed by the
host while it's parsing a very large output.xml file.
Signed-off-by: Jamo Luhrsen <jluhrsen@gmail.com>
Change-Id: I86027f792f6d5a94670e409f70cf974c423dc299