Bugfix: [LDC-439] Fixed Search for youtube video in the media browser

## Ready State: Yes

#### JIRA Reference: https://imagex.atlassian.net/browse/LDC-439

Fixed Search for youtube video in the media browser

## Deployment Instructions

* Merge code.
* Clear caches with `drush cache-clear all`

## Usage/Test Instructions

* Create node/add/blog, add media WYSIWYG editor and search youtube video.