[Task] Support the PodName and InterfaceName of OVSPortInfo query.

[hwchiu]

The output will looks like below.

The PortId is what user need to handle in the openflow rules and the portID(-1) is bridge itself, the caller can ignore it.

[codecov-io]

Codecov Report

❗ No coverage uploaded for pull request base (develop@8b37c4a). Click here to learn what that means.
The diff coverage is 63.33%.

@@            Coverage Diff             @@
##             develop     #297   +/-   ##
==========================================
  Coverage           ?   75.61%           
==========================================
  Files              ?       63           
  Lines              ?     3679           
  Branches           ?        0           
==========================================
  Hits               ?     2782           
  Misses             ?      696           
  Partials           ?      201

Impacted Files	Coverage Δ
src/networkcontroller/network_controller.go	81.81% <100%> (ø)
src/kubernetes/pods.go	90% <100%> (ø)
src/server/route.go	84.96% <100%> (ø)
src/server/handler_ovs.go	93.75% <100%> (ø)
src/ovscontroller/ovs_system.go	59.32% <59.25%> (ø)

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