Add v1.2.1 release notes
Add v1.2.1 release notes

Change-Id: I539df5d45a6b7347d42d1fadcc43e2684b525a12

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