Fix index pattern search error
Closes issue #1899.

When using the index name search, if you type quickly, then the search is not invoked after you have finished typing. This is because we had specified options to lodash debounce (https://lodash.com/docs#debounce) to execute the search function on the leading edge of the specified timeout, instead of the trailing edge (which it does by default). This change removes the overrides and fixes the issue.
remove console logging
Merge pull request #1930 from lukasolson/issue-1899

Fix index pattern search error