ENYO-2021: Add Text to Speech Accessibility support to ExpandableText
ENYO-2021: Add Text to Speech Accessibility support to ExpandableText

https://jira2.lgsvl.com/browse/ENYO-2021
Enyo-DCO-1.1-Signed-off-by: Bongsub Kim <bongsub.kim@lgepartner.com>

Change-Id: Ic5fd3f0deac2f4545002821ef18147f42ded9501

enyojs/moonstone