[Integrated] RFR: Rebase before running the final check when integrating

[duke]

Changeset: 627dc572
Author:    Robin Westberg <rwestberg at openjdk.org>
Date:      2019-10-07 14:30:29 +0000
URL:       https://git.openjdk.java.net/skara/commit/627dc572

Rebase before running the final check when integrating

Reviewed-by: ehelin

! bots/pr/src/main/java/org/openjdk/skara/bots/pr/IntegrateCommand.java
! bots/pr/src/test/java/org/openjdk/skara/bots/pr/IntegrateTests.java