message: update MLC swagger json
  * update MLC swagger json
  * Update machineLearningServices.json
  * Update machineLearningServices.json
  Clean up pretty layout
  * Update machineLearningServices.json
diff: "aksNetworkingConfiguration": {
  "description": "AKS networking configuration for vnet",
  "$ref": "#/definitions/AksNetworkingConfiguration"
  + },
  + "clusterPurpose": {
  + "type": "string",
  + "enum": [
  + "FastProd",
  + "DenseProd",
  + "DevTest"
  + ]
  }
  }
  }
  "type": "string",
  "enum": [
  "Disabled",
  - "Enabled"
  + "Enabled",
  + "Auto"
  ]
  },
  "cert": {
  "cname": {
  "description": "CNAME of the cert",
  "type": "string"
  + },
  + "leafDomainLabel": {
  + "description": "The leaf domain label name",
  + "type": "string"
  + },
  + "overwriteExistingDomain": {
  + "description": "Boolean value for overwriting the domain",
  + "type": "boolean",
  + "default": false
  }
  }
  },
  