Enable GET port_detail API to set parameters

We can set patameters(node_uuid, address, ...) to GET port_detail API.
This patch enables it.

Change-Id: I32e95deaffecfddece24c1a7e5c08c3e392380d5
Closes-Bug: #1312503
Correct nc command in test_load_balancer_basic

HA-Proxy always expects it will close the connection first.
To make a backend respect it, the command that starts
the netcat "web server" should be modified by adding
'cat >/dev/null' to a responce. Thus a client is made to wait
until the proxy closes the connection.

Closes bug: 1326607

Change-Id: I762f7b59bd1fd76471cf5530882b6b08e8c9bb0b
Merge "Enable GET port_detail API to set parameters"
Merge "Correct nc command in test_load_balancer_basic"