Add release notes for v2.1.0
Add release notes for v2.1.0

Change-Id: Ib484ab6ea517443735bae3fcfdfecc0c0dadcb68

cgi-eoss/ftep,cgi-eoss/ftep,cgi-eoss/ftep,cgi-eoss/ftep,cgi-eoss/ftep,cgi-eoss/ftep,cgi-eoss/ftep