Flow Classification extension

Flow Classification extension

Flow definition can be changed by testcase setup. By default
only ingress ports are used to route traffic, but flow can be
extended by src and dst IP addresses used by the traffic
generator.

Change-Id: I694714537ad2d818192a39f3235d8e6bf0f59a49
JIRA: VSPERF-90
Signed-off-by: Martin Klozik <martinx.klozik@intel.com>
Reviewed-by: Billy O Mahony <billy.o.mahony@intel.com>
Reviewed-by: Maryam Tahhan <maryam.tahhan@intel.com>
Reviewed-by: Fatih Degirmenci <fatih.degirmenci@ericsson.com>
Reviewed-by: Gene Snider <eugene.snider@huawei.com>
Reviewed-by: Al Morton <acmorton@att.com>
Reviewed-by: Tv Rao <tv.rao@freescale.com>
Reviewed-by: Brian Castelli <brian.castelli@spirent.com>