Fetch specific flow from introspect is failing,

as the provided key params are not complete.
Fixing http introspect to use family as IPv4, by default.

this will require change when we support IPv6 flow as well.
Closes-Bug: #1382012

Change-Id: I1393ea21dbcaf3938d56802afb863103d7277eb7
Merge "Fetch specific flow from introspect is failing,"