[INTERNAL] sap.ui.ux3.Shell/NavigationBar: Additional F6 keyboard group
navigation markers
 
BCP: 1472008862
Change-Id: I25b6fb2fad67aa88bcb7cdccffa3fa69fb7169da
Merge "[INTERNAL] sap.ui.ux3.Shell/NavigationBar: Additional F6 keyboard group navigation markers   BCP: 1472008862 Change-Id: I25b6fb2fad67aa88bcb7cdccffa3fa69fb7169da"