constraint backwards compatibility breakage

[ygersie]

Nomad 0.6.2 is not compatible with old style declaration of constraints. If I have a distinct_hosts set like this:

    constraint {
        operator  = "distinct_hosts"
        value     = "true"
    }

I get the following plan result:

Error during plan: Unexpected response code: 500 (1 error(s) occurred:

* Constraint 1 validation failed: 1 error(s) occurred:

* Distinct hosts constraint doesn't allow RTarget. Got "true")

Either the documentation needs to be updated or this is a bug

[github-actions]

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