Implement parameter-conditioned gating

[rplevka]

What feature do you want to see added?

My job is parametrized and only requires service foo if the build is executed with parameter use_foo: true.
Otherwise, it makes no sense to keep the build blocked on service foo unavailability.

I'd like to have a possibility to configure a conditioned gating service.
This might be implemented e.g. by specifying an optional job bool parameter to map a specific service to.

Upstream changes

No response

Are you interested in contributing this feature?

No response

[olivergondza]

This plugin (implementation) is a legacy one pending major rewrite: #44.

If such features are to be added, it will be done in gating-core, so other implementations can benefit from this.

It would be great if there were a way to expand parameter values in cachet requirements (at least for Jenkins pipeline job type), but I suspect it will not work because both parameters and cachet config are properties.