Self tests failing on php version check

[greg-1-anderson]

The php version set for the dev environment is 5.5 (default).

The test scripts create a new multidev from the dev environment. The pantheon.upstream.yml includes a directive to set the php version to 7.0.

The contents of pantheon.upstream.yml (or pantheon.yml) are not considered or applied on an upstream update. Ergo, the php version stays at 5.5.

Perhaps the easiest workaround would be to make a no-op change to the pantheon.upstream.yml file or pantheon.yml file and commit it via Termimus. This should combine the settings in pantheon.upstream.yml with the settings in pantheon.yml and apply any changes (e.g. php version).

This test failure does not affect the example-drops-8-composer repository tests.