Description of problem:
pxe_ssh is getting deprecated and pxe_ipmitool with virtualbmc should be used with new releases. 
The validation command for instackenv.json - 'openstack baremetal instackenv validate' doesn't work with virtualbmc (doesn't take port)



Version-Release number of selected component (if applicable):
OSP11


How reproducible:
Everytime


Steps to Reproduce:
1. create instackenv.json that uses virtualbmc with ipmi
2. use validation command
3.

Actual results:
openstack baremetal instackenv validate --debug
START with options: [u'baremetal', u'instackenv', u'validate', u'--debug']
options: Namespace(access_key='', access_secret='***', access_token='***', access_token_endpoint='',
...
Checking node 192.168.122.1
Checking node 192.168.122.1
Identified baremetal node
Executing: ipmitool -R 1 -I lanplus -H 192.168.122.1 -U admin -P password chassis status
Error: Unable to establish IPMI v2 / RMCP+ session
ERROR: ipmitool failed
Checking node 192.168.122.1
Identified baremetal node
Executing: ipmitool -R 1 -I lanplus -H 192.168.122.1 -U admin -P password chassis status
Error: Unable to establish IPMI v2 / RMCP+ session
ERROR: ipmitool failed
Checking node 192.168.122.1
Identified baremetal node
...
ERROR: ipmitool failed
ERROR: Baremetals IPs are not all unique.
MAC addresses are all unique.
FAILURE: found 9 errors
clean_up ValidateInstackEnv: 
END return value: 0


Expected results:
All nodes validate


Additional info:

Here is part of my instackenv.json for reference. Please node the port number:

[stack@undercloud ~]$ cat instackenv.json
{
  "nodes": [
    {
      "pm_user": "admin",
      "mac": [
        "52:54:00:59:ff:17"
      ],
      "pm_type": "pxe_ipmitool",
      "pm_password": "password",
      "pm_addr": "192.168.122.1",
      "pm_port": "6235",
      "name": "overcloud-ctrl01"
    },
    {
      "pm_user": "admin",
      "mac": [
        "52:54:00:81:80:ca"
      ],
      "pm_type": "pxe_ipmitool",
      "pm_password": "password",
      "pm_addr": "192.168.122.1",
      "pm_port": "6236",
     "name": "overcloud-ctrl02"
    },


The instackenv.json can be still imported to ironic, introspected and deployed with .. it just the openstack-cli command that needs to be updated.