Backport Request - Remove regex flags parameter from terms and significant terms aggs

[djschny]

See the following:

• Github - CASE_INSENSITIVE not working in ElasticSearch > 1.7 elasticsearch#17437
• Breaking Changes for 2.x - https://www.elastic.co/guide/en/elasticsearch/reference/2.3/breaking_20_aggregation_changes.html#_including_excluding_terms

It looks like Kibana was never updated to remove these kind of options and be compatible with ES 2.x

[Bargs]

@djschny where are you seeing the CASE_INSENSITIVE option? I'm looking at the terms agg options in master but I'm not seeing it.

[djschny]

See attached screenshot. It is with Kibana 4.5.0

[Bargs]

Ah ha, thanks. Looks like this was fixed in 5.0, but wasn't backported #6875. I've edited the title to reflect that this is a backport request.

[tbragin]

@djschny Do you still think this is critical to backport to 4.x?

[djschny]

@tbragin Back in summer of last year when the ticket was entered, yes. Given that we are now 8 months later and v5.x has been out for a good amount, does not seem necessary anymore.

[tbragin]

@djschny Agreed. Sorry we didn't get to it in time. :( I'll close it -- please comment or reopen if you see a big need for it going forward.

[djschny]

No worries! It was a minor thing compared to other priorities.