NETVIRT-1188: ACL: Stats not working for ingress direction
Fixed this problem by using lport tag in Cookie for drop flows.
Earlier, metadata matches which was available in pipeline egress side (VM
Ingress) is no longer supported. So, added lport details in Cookie itself
now to uniquely identify drop flows. Aligning with aforementioned changes,
removed metadata matches from direct stats input which only has Cookie
matches now.
Change-Id: Ifac03e75eb42b2a6f9dbd0d14579f462873d9285
Signed-off-by: Shashidhar Raja <shashidharr@altencalsoftlabs.com>