Availability check for ssh targets

[ssmirr]

Describe the bug
The availability check seems to check local machine even when used with a ssh target

To Reproduce
Here is an opunit check:

 - availability:
      comment: check app running in the vm
      port: 5001
      status: 200
      url: /

and inventory file:

- ssh:
  - target: vagrant@127.0.0.1:2800
    private_key: ~/id_rsa
    criteria_path: test/vm.yml

Expected behavior
Expected to check if localhost:5001 server is running inside the vm.

Actual behavior
It check localhost:5001 on the local machine.