[BUG] case_insensitive not working on wildcard queries

[nknize]

Describe the bug
the case_insensitive parameter for wildcard query does not work.

To Reproduce
Steps to reproduce the behavior:

create index:

PUT /index/_mapping 
{
  "properties" : {
    "field": {
      "type": "text"
    }
  }
}

post a document:
POST index/_doc/ {"field" : "lowercase text"}

query with wildcard case sensitivity:

GET index/_search
{
  "query" : {
    "wildcard": {
      "field": {
        "value": "Text",
        "case_insensitive": false
      } 
    }
}

Expected behavior
No hits should be returned in the above example, but because the standard analyzer is used wildcard query always normalizes the wildcard pattern.