PLAT-8479: Add accessibility option to make accessibility feature enable on garnet sample
PLAT-8479: Add accessibility option to make accessibility feature enable on garnet sample

Add accessibility option, which is set to true.

https://jira2.lgsvl.com/browse/PLAT-8479
Enyo-DCO-1.1-Signed-off-by: Bongsub Kim <bongsub.kim@lgepartner.com>

Change-Id: I6017abad0e08c1796b615e2e4776c380dded92bb

enyojs/enyo-strawman