vCD cmdlets need updates for some "switch" type parameters

[shamsway]

Current Behavior:

The latest release of the Rubrik SDK for Powershell adjusted some parameters to the Switch type. Export-RubrikVApp and Restore-RubrikVApp need minor logic updates so they pass the correct JSON body to the Rubrik API.

Currently the cmdlets will generate an invalid JSON body similar to this with the -PowerOn parameter

{
  "vmsToRestore": [
    {
      "name": "t2a-linux",
      "vcdMoid": "vm-4abf66c5-9ef8-4df2-ba26-2260618e4a80",
      "networkConnections": []
    }
  ],
  "shouldPowerOnVmsAfterRecovery": {
    "IsPresent": true
  }
}

Expected Behavior:
JSON body should look like this ("isPresent" should not be part of the body)

{ 
   "vmsToRestore":[ 
      { 
         "name":"t2a-linux",
         "vcdMoid":"vm-4abf66c5-9ef8-4df2-ba26-2260618e4a80",
         "networkConnections":[ 
          
         ]
      }
   ],
   "shouldPowerOnVmsAfterRecovery":false
}