[Integrated] RFR: 256: Multiple [Integrated] messages can still be sent

[Robin Westberg]

Changeset: 39831e68
Author:    Robin Westberg <rwestberg at openjdk.org>
Date:      2020-02-04 09:28:25 +0000
URL:       https://git.openjdk.java.net/skara/commit/39831e68

256: Multiple [Integrated] messages can still be sent

Reviewed-by: ehelin

! bots/mlbridge/src/test/java/org/openjdk/skara/bots/mlbridge/MailingListBridgeBotTests.java
! bots/notify/src/main/java/org/openjdk/skara/bots/notify/MailingListUpdater.java
! bots/notify/src/test/java/org/openjdk/skara/bots/notify/UpdaterTests.java
! test/src/main/java/org/openjdk/skara/test/TestMailmanServer.java