Pass arbitrary parameters to native package managers

[fetzerms]

Use case

We currently want to update our systems automatically using this patching module. In our special environment, we need to make sure that some repositories are ignored and others are enabled during the patching process.

Feature Request
As this differs very much across systems and their package managers, it would be great if arbitrary parameters could be passed to the system commands. Maybe this would also somehow solve #64 as the user could supply arguments that are specific for his environment.

Example:

run_plan('patching', $targets, {
    monitoring_enabled => false,
    snapshot_create => false,
    snapshot_delete => false,
    report_file => undef,
    available_updates_extra_args => '--enable-repo=*',
    update_extra_args => '--enable-repo=*'
  })