Changed the tcp_flag match builder param in /util/md/match

Patch#2 -Did the same for the TCP port num.

Patch#1 -Changed the tcp builder to use the instance variable
passed in the match tcpflag util method rather then
hardcoded to 0x002(tcp_syn)

Change-Id: I29d54c87af24678a6e99692b986ae5a84d60ced2
Signed-off-by: Brent Salisbury <brent.salisbury@gmail.com>
Merge "Changed the tcp_flag match builder param in /util/md/match"