[Cherry-pick]Release notes for v1.4.2

[deepakkinni]

What this PR does / why we need it: Release notes for v1.4.2

Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

Signed-off-by: Deepak Kinni dkinni@vmware.com

[xing-yang]

lgtm