[foreman] Allow to set size limit instead of hardcoding it

[pablomh]

Allow the possibility to provide the sizelimit value using the log_size option.

Set it by default (when no option is provided) to the current value (500).

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[TurboTurtle]

log_size is always set to some value, aside from when a user passes --all-logs, where we override it to None.

This would make it so that this collection is always following log_size, and also mean we only limit to 500mb when we are otherwise requesting we don't do any size limiting, which isn't desired.

[packit-as-a-service]

Congratulations! One of the builds has completed. 🍾

You can install the built RPMs by following these steps:

• sudo yum install -y dnf-plugins-core on RHEL 8
• sudo dnf install -y dnf-plugins-core on Fedora
• dnf copr enable packit/sosreport-sos-4103
• And now you can install the packages.

Please note that the RPMs should be used only in a testing environment.