Update Kibana input plugin with support Kibana 6.6.x, 6.7.x and 7.0.x

[yuriy-slobodchikov]

Feature Request

Update Kibana input plugin with support Kibana 6.6.x, 6.7.x and 7.0.x

Proposal:

Add configuration to point version of kibana to use - like string constants for example
kibana_version = "6.3.x" "6.6.x" "6.7.x" "7.0.x"
for each version implement its own json mapping and parsing response.

Current behavior:

Looks like in Kibana 6.6.x version json of /api/status was changed
and now kibana plugin cannot parse response for Kibana 6.6.x, 6.7.x and 7.0.x

Desired behavior:

In configurstion of plugin there should be some field pointing version.
Kibana plugin should support Kibana 6.6.x, 6.7.x and 7.0.x

Use case:

After upgrading from 6.3 to 6.7.1 kibana plugin fail to parse new format of response.

[yuriy-slobodchikov]

Hello @lpic10
Please look into this ticket, may be you have some time to implement it.

[vikkyomkar]

@yuriy-slobodchikov / @danielnelson I have raised a PR to address this issue