Weibin Sun authored Aug 16, 2012 and Robert Ricci committed Sep 14, 2012

2. convertPortFormat now support LACP port-channel index, which is:
   - for IfIndex: 1000000 + (port-channel#)
   - for Port class: card is 1000 and port is port-channel#
   - for Sysdb: Port-ChannelX, where X is port-channel#

3. setVlanIfOnTrunk doesn't need change since convertPortFormat can
   deal with port-channel index.

4. LACP port-channel is treated almost all the same as normal port by
   Arista Python API when doing VLAN operations, so all VLAN ops can work
   with port-channel without needs of change.

5. The last, but most important, I don't have an active and workable
   physical port-channel to test on, so for now, let's just pray...

Conflicts:
	tbsetup/snmpit_test/snmpit_arista.pm.in