This patch adds a '--long' option to trunk list OSC CLI. Using
'--long' option will now allow user to see additional fields
while listing all trunks.
This patch is also a follow up patch for change
I6fe1dbd81813fae234801a61c0e3d89f9e7c791e to address multiple
TODOs like importing modules from osc-lib instead direct imports
and adding exception handling for NetworkTrunkSet command with
appropriate unit tests.
Change-Id: Iae1801b0b4f6bc2ca434290041ab5277285e400b
43403b7b07