Merge branch 'lm-replace-underscore-droplab' into 'master'

Replace underscore with lodash for ./app/assets/javascripts/droplab

See merge request gitlab-org/gitlab!28707

app/assets/javascripts/droplab/utils.js

 /* eslint-disable */
 
-import { template as _template } from 'underscore';
+import { template as _template } from 'lodash';
 import { DATA_TRIGGER, DATA_DROPDOWN, TEMPLATE_REGEX } from './constants';
 
 const utils = {