Release notes for v3.1.2
Release notes for v3.1.2

Change-Id: I8c36d23b8a8af76e8f9830c4116573418ac50531

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