Setup for JUWELS

Setup module script and pip installations to get the current version running on JUWELS. Cartopy will be a problem for sure

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I have a running version for JUWELS, but it currently does not support cartopy.

@leufen1 is there any specific reason why we use os.getlogin() instead of getpass.getuser() in helpers.prepare_host(). For the current JUWELS version, I changed it to the later one.

There was never a reason, just a decision to use os.getlogin() without the knowledge of getpass.getuser() . According to the official docs it is preferable to use the later command.

mentioned in commit 3408a7a0

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@leufen1 I have created some tests in a3e31215, but we should discuss those. I think they are not the best ones...

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mentioned in merge request !125 (merged)

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closed via merge request !125 (merged)