Checkmk Werk 13641: Fix 'ValueError: MAC check failed' error in "Rewriting rulesets" phase of update

ID: 13641 Title: Fix 'ValueError: MAC check failed' error in "Rewriting rulesets" phase of update Component: Core & setup Level: 1 Class: Bug fix Version: 2.2.0i1 The update procedure from 2.0 was accessing the password store for reading before rewriting it to the new 2.1 format. This could make updates from 2.0 to 2.1 fail.