[INTERNAL] sap.m.Carousel: Accessibility role is now updated
[INTERNAL] sap.m.Carousel: Accessibility role is now updated

role='list' on the wrapping div, becomes role='listbox' and role='listitem'
on every carousel item becomes role='option'

Change-Id: I553a82a7b115aa57c8f19571dea70652c1b88dbf
JIRA: BGSOFUIRODOPI-2150

SAP/openui5,SAP/openui5,SAP/openui5,SAP/openui5