[Feature Request] EFA Enablement in AWS Plugin

[tatsuhirochiba]

Is your feature request related to a problem? Please describe.
We are now separately setting up EFA specific artifacts (i.e. deployments for device plugin, operating system configs, etc.) in the cluster, but we want to deploy them automatically.

Describe the solution you'd like
Just prepare a toggle to enable EFA mode. Then aws plugin will handle all required configurations while setting up the cluster.

kind: MultiNicNetwork
metadata:
  name: multinic-aws-ipvlan
spec:
  ipam: |
    {
      "type": "multi-nic-ipam",
      "hostBlock": 8, 
      "interfaceBlock": 2,
      "vlanMode": "l2"
    }
  multiNICIPAM: true
  plugin:
    cniVersion: "0.3.0"
    type: aws-ipvlan
    args: 
      mode: l2
      EFA: true

Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.

Additional context
Add any other context or screenshots about the feature request here.