Cherry-pick #10995 to 7.x: Include ip and boolean type when generating index pattern

[cwurm]

Cherry-pick of PR #10995 to 7.x branch. Original message:

A number of fields in our fields.yml files now are type: ip (e.g. source.ip) and type: boolean, but the code generating index patterns does not know about these types yet and so does not add a type to the index pattern for those fields at all. This leads to errors in Kibana when looking at dashboards that contain references to those fields.

Output of ./auditbeat export index-pattern:

Before:

  {
    "aggregatable": true,
    "analyzed": false,
    "count": 0,
    "doc_values": true,
    "indexed": true,
    "name": "source.ip",
    "scripted": false,
    "searchable": true
  },

After:

  {
    "aggregatable": true,
    "analyzed": false,
    "count": 0,
    "doc_values": true,
    "indexed": true,
    "name": "source.ip",
    "scripted": false,
    "searchable": true,
    "type": "ip"
  },