Update to pg-upgrade output
requested to merge 2800-postgresql-detection-and-upgrading-since-10-0-0-rc5-ubuntu-16-10 into master
Changing output based on the presence or absence of a version to upgrade to
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Move test for a version to upgrade to earlier. Previously we were checking if an instance had already been upgraded, before we confirmed there was something to upgrade to.
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Change test to not use the progress_message method. This isn't an OK Not OK test, it only controls workflow.
Closes #2800 (closed)