git: openjdk/skara: 39: Use the lastUpdated field of pull requests to avoid unnecessary polls

[duke]

Changeset: 8a62fc93
Author:    Robin Westberg <rwestberg at openjdk.org>
Date:      2019-07-03 09:01:51 +0000
URL:       http://git.openjdk.java.net/skara/commit/8a62fc93

39: Use the lastUpdated field of pull requests to avoid unnecessary polls

Reviewed-by: ehelin

! bots/mlbridge/src/main/java/org/openjdk/skara/bots/mlbridge/MailingListBridgeBot.java
! bots/pr/src/main/java/org/openjdk/skara/bots/pr/PullRequestBot.java
! bots/submit/src/main/java/org/openjdk/skara/bots/submit/SubmitBot.java
+ host/src/main/java/org/openjdk/skara/host/PullRequestUpdateCache.java
! test/src/main/java/org/openjdk/skara/test/TestPullRequest.java