eigen: add test

Closes #34727.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
eigen: update 3.2.2 bottle.
bwctl: add build options for iperf3 and thrulay

bwctl will statically link against iperf3 and thrulay if they are present,
but will silently skip them if they are not
bwctl: update 1.5.2-10 bottle.