Add option to exclude container(s) from update, but still check if an update is available

[dlong500]

Right now we have the Exclude option that excludes containers from both the check and update phases. Could an option be added to only exclude specified containers from the update, but still check if an update is available?

Basically the use case is to temporarily block accidentally updating one or more containers for whatever reason (bugs, incompatibilities, etc) but not to lose sight that an update is available for said container(s).