allow selecting job_templates by feature when creating job_invocations

[evgeni]

SUMMARY

job_invocation currently expects the user to select the template by providing a job_template name, however the API also allows to select them by "feature"

apidoc says: job_invocation[feature] optional , nil allowed | Remote execution feature label that should be triggered, job template assigned to this feature will be used

should be marked as "required_one_of(job_tempalte, feature)" and I think also "mutually_exclusive(job_template, feature)"

ISSUE TYPE

• Feature Idea

[evgeni]

props to @jturel for teaching me this!

[jturel]

should be marked as "required_one_of(job_tempalte, feature)" and I think also "mutually_exclusive(job_template, feature)"

Correct, the API will error if both are specified and one of them should be included with each create request