fix: expand variables in plugin_irq

[adriaan42]

Forgot to expand variables in the new irq plugin.

Side question: is there a reason that variables in options are not automatically expanded, e.g. right after loading the profile? They are automatically expanded for @command invocations, but not for the "general" non-command tuning.

[yarda]

/packit build

[yarda]

Thanks, LGTM.

Side question: is there a reason that variables in options are not automatically expanded, e.g. right after loading the profile? They are automatically expanded for @command invocations, but not for the "general" non-command tuning.

I think it's because during the expansion various functions can be called which could have side effects. E.g. the ${f:exec:} can alter the system state. Thus the variables are expanded and the functions executed only when needed and in the order the @commands are called.

But it could be improved.

[yarda]

CentOS 7 CI failure is unrelated and being worked on by the TFT team.