[docs] add blog post announcement as part of a release
[docs] add blog post announcement as part of a release

Change-Id: I9bcb826f671ee7878b6e7a66ed9a77256847a153
Reviewed-on: http://gerrit.cloudera.org:8080/15951
Tested-by: Kudu Jenkins
Reviewed-by: Alexey Serbin <864f6b82bd94e8dda64141d4274519ee66e0102e@cloudera.com>

helifu/kudu,helifu/kudu,helifu/kudu,helifu/kudu,helifu/kudu,helifu/kudu,helifu/kudu,helifu/kudu,helifu/kudu