message: Fix gender enum issue and training time deserialization bug
diff: },
  "enum": [
  "male",
  - "female"
  + "female",
  + "genderless"
  ]
  },
  "smile": {
  "description": "Training status: notstarted, running, succeeded, failed. If the training process is waiting to perform, the status is notstarted. If the training is ongoing, the status is running. Status succeed means this person group is ready for Face - Identify. Status failed is often caused by no person or no persisted face exist in the person group",
  "x-nullable": false,
  "x-ms-enum": {
  - "name": "TrainingStatus",
  + "name": "TrainingStatusType",
  "modelAsString": false
  },
  "enum": [
  },
  "createdDateTime": {
  "type": "string",
  - "format": "date-time-rfc1123",
  + "format": "date-time",
  "description": "A combined UTC date and time string that describes person group created time.",
  "x-ms-client-name": "created"
  },
  "lastActionDateTime": {
  "type": "string",
  - "format": "date-time-rfc1123",
  + "format": "date-time",
  "description": "Person group last modify time in the UTC, could be null value when the person group is not successfully trained.",
  "x-ms-client-name": "lastAction"
  },
  