document changes
add new case
update expected results

commit #5514146 results in multiple new mac addresses collected.
fix LLDP info retrieval

The information seems to be either associated with an interface or a
port identifier, according to the vendor.
kill duplicated test
add new test
add two new cases
initial import
add missing dependencies
add Summit X350
do not modify raw SNMP values

Using chomp may have unexpected results on non-translated binary values.

closes: #2414
more changes