Check_MK Werk 4564: Compatibility fix for windows agent updater

ID: 4564 Title: Compatibility fix for windows agent updater Component: agents Level: 1 Class: Bug fix Version: 1.5.0i1 The command cmk-update-agent sometimes fails with an error message like "Loadlibrary() argument 1 must be string not unicode error" when running on Windows. The error cause is an incompatibility within Python 2.7.13 and some Python libraries. We fix this issue by using Python 2.7.12 instead.