For link local service request, do src port nat. Bind to a local port, and use it as nat src port.
Update test case
Merge remote branch 'upstream/master'
Update for code review
Merge remote branch 'upstream/master'

Conflicts:
	src/vnsw/agent/pkt/flow_table.h
	src/vnsw/agent/pkt/test/test_pkt_flow.cc
Limit the number of linklocal flows
Merge remote branch 'upstream/master'
Rename kMaxOpenFiles to kMaxOtherOpenFds
Merge pull request #296 from haripk/master

For link local service request, do src port nat - bind to a local port for nat src port.