HTTP Proxy configuration for download of Checkmk Server Setup & GPG Key

[phivo0]

Pull request type

Please check the type of change your PR introduces:

• Bugfix
• Feature
• Code style update (formatting, renaming)
• Refactoring (no functional changes, no API changes)
• Build related changes
• Documentation content changes
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What is the current behavior?

Currently there is no option to specify a HTTP proxy for download the Checkmk Server Setup & GPG Key.

It is possible to specify the necessary environment variables that the play or role level, but this does not work if the remote nodes apt uses a network-local repository. In this the environment variables would overwrite apt's configuration forcing it to use the proxy. This results in a failure on the 'Update APT Cache.' task.

What is the new behavior?

Now there are new optional variables that allow the specification of http_proxy, https_proxy for downloading the Checkmk Server Setup & GPG Key. Both cases can be separtely configured if needed.

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[phivo0]

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[robin-checkmk]

The change looks sensible apart from the minor bug mentioned in the dedicated comment. I am currently looking into adding a molecule test for the whole proxy topic, but that is more on the nice-to-have side of things. So as soon as the requested changes are implemented, we are good to merge.