OVSDriver: fix pktin match issues for OF 1.3

The VLAN VID representation changed between OF 1.0 and 1.3. Also need to omit
the tcp_src OXM for UDP/etc packets since 1.2+ gives them their own OXMs.
Merge into master from pull request #61:
OVSDriver: fix pktin match issues for OF 1.3 (https://github.com/floodlight/ivs/pull/61)