Update php to 7.2.2
What does this MR do?
Uses a newer docker image with PHP7.2.2. It also adjusts some broken tests because DateTime now has microseconds which get cut of at some formatting, that is why a comparison needs to take up to one second difference into account...
Side: also hardens the foodsaverVerifyUnverify test.
How confident are you it won't break things if deployed?
We don't use PHP config from docker in production - this is to see if we have to expect any other problems.
Links to related issues
- added a test, or explain why one is not needed/possible...
- no unrelated changes
- asked someone for a code review
- joined #foodsharing-beta channel at https://slackin.yunity.org
- added an entry to CHANGELOG.md (description, merge request link, username(s))