Merge branch 'release-rs-fuya-fuya' into DOC-4509

Author: rrelledge

content/operate/rs/release-notes/rs-7-8-releases/rs-7-8-2-tba.md

@@ -97,6 +97,8 @@ This version offers:
 
     - Improved error messages on the sign-in screen for locked out users versus incorrect or expired passwords.
 
+    - Flush an Active-Active database.
+
 - A new **User Manager** role designed for user administration is available for [role-based access control]({{<relref "/operate/rs/security/access-control">}}).
 
     - This management role allows assigned users to create, edit, and delete users using the Cluster Manager UI and REST API.