Records of the same Alert family must be alike

[DGabri]

The API: /lua/alert_stats.lua format=json is not consistent. This causes parsing problems. The json key in question is 'flow_related_info'.

This is an example of suspicious DNS Traffic api response content with mismatching response:

• Alert x response: {'descr': {'client_traffic': '151', 'server_traffic': '173'}}
• Alert k response: {'descr': {'last_query_type': 'A',
  'server_traffic': '159',
  'last_return_code': 'NOERROR',
  'last_query': [VALUE OMITTED FOR THIS GITHUB ISSUE],
  'client_traffic': '143'}}

Here an example of binary application transfer:

• Alert x response: {'descr': {'client_traffic': '418', 'server_traffic': '34588'}}
• Alert k response: {'descr': {'last_user_agent': 'AutoIt',
  'last_url': [VALUE OMITTED FOR THIS GITHUB ISSUE],
  'http_info': 'GET',
  'client_traffic': '21629',
  'server_traffic': '798426',
  'last_return_code': 200}}