* The module now correctly sets the timezone in both the config file and
in /etc/localtime; while hwclock is set in both the config and
/etc/adjtime.
* Module checks if the timezone is actually set by checking
/etc/localtime. Before it only checked if it was set in the config file.
* Fixed module not setting the timezone on RedHat systems if
/etc/localtime was a symbolic link.
* Fixed module failures in case of missing config files or incorrect data
in them.
* Added a lot of integrations tests to cover most of these situations.
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