Checkmk Werk 10034: Fix wrong encoding in site user context

ID: 10034 Title: Fix wrong encoding in site user context Component: Site Management Level: 1 Class: Bug fix Version: 1.7.0i1 At least since werk #7330 the environment variables LANG and LC_ALL were set to "C" to have a localization independent runtime environment in the sites. This lead to encoding problems in shell context, which also inherited into e.g. python runtimes, changing the preferred encoding of the locale module. To fix this issue the site is now setting "C.UTF-8" as environment.