avoid a warning on non BSD system
increase the timeout for slow machine

This fix a FTBFS on Debian MIPS.
prepare 2.3.1 release
fix since the merge of Tools::SNMP in Hardware

commit:a8168b2418ac514c1545217286f859ceb9149100
getLastElement() is deprecated
we collect more USB info
fix expected results
Merge remote-tracking branch 'forge/2.3.x' into 2.3.x