Supportconfig proxy

[mbussolotto]

What does this PR change?

mgradm/mgrpxy support config improvements. Most of the code is now shared between mgradm and mgrpxy.

mgradm support config tarball content:

• tarball created by supportconfig command inside the container
• tarball created by supportconfig command in the host
• content of all the systemd files and configuration related to the server (systemctl cat uyuni-*)
• content of all the files binded (it should be empty by now)
• podman inspect
• podman logs (it should be empty by now)

mgrpxy support config tarball content on podman:

• tarball created by supportconfig command in the host
• content of all the systemd files and configuration related to the proxy (systemctl cat uyuni-*)
• content of all the files binded (e.g. apache tuning, squid tuning, other conf files)
• podman inspect
• podman logs

mgrpxy support config tarball content on k3s:

• content of all configmap (all the configuration such as apache and squid are embedded there)
• content of kubectl get pod -o yaml command

Test coverage

• No tests
• DONE

Links

Issue(s): #314

• DONE

Changelogs

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[rjmateus]

Just some small considerations, other then that looks good to me

[rjmateus]

lgtm