Backport of Validate that Connect Native services define a port into release/1.9.x

[hc-github-team-nomad-core]

Backport

This PR is auto-generated from #24329 to be assessed for backporting due to the inclusion of the label backport/1.9.x.

The below text is copied from the body of the original PR.

---

This PR adds a validation check for PortLabels on Connect Native enabled services. This is a requirement in Consul and if missing from the job spec will continually error.

"service": "nomad",
"message": "failed to update services in Consul",
"attributes": {
    "hostname": "<snip>",
    "@level": "warn",
    "@timestamp": "2024-10-29T15:16:34.148322Z",
    "service": "nomad",
    "@module": "consul.sync",
    "error": "Unexpected response code: 400 (Validation failed: 1 error occurred:\n\t* Port or SocketPath must be set for a Connect native service.)",
    "status": "info",
}

I can't get all of the tests to pass locally but TestService_Validate looked good.

=== RUN   TestService_Validate
=== PAUSE TestService_Validate
=== CONT  TestService_Validate
=== RUN   TestService_Validate/base_service
=== RUN   TestService_Validate/Native_Connect_without_task_name
=== RUN   TestService_Validate/Native_Connect_with_task_name
=== RUN   TestService_Validate/Native_Connect_without_port
=== RUN   TestService_Validate/Native_Connect_with_port
=== RUN   TestService_Validate/Native_Connect_with_Sidecar
=== RUN   TestService_Validate/provider_nomad_with_checks
=== RUN   TestService_Validate/provider_nomad_with_invalid_check_type
=== RUN   TestService_Validate/provider_nomad_with_tls_skip_verify
=== RUN   TestService_Validate/provider_nomad_with_connect
=== RUN   TestService_Validate/provider_nomad_valid
=== RUN   TestService_Validate/provider_consul_with_notes_too_long
--- PASS: TestService_Validate (0.00s)
    --- PASS: TestService_Validate/base_service (0.00s)
    --- PASS: TestService_Validate/Native_Connect_without_task_name (0.00s)
    --- PASS: TestService_Validate/Native_Connect_with_task_name (0.00s)
    --- PASS: TestService_Validate/Native_Connect_without_port (0.00s)
    --- PASS: TestService_Validate/Native_Connect_with_port (0.00s)
    --- PASS: TestService_Validate/Native_Connect_with_Sidecar (0.00s)
    --- PASS: TestService_Validate/provider_nomad_with_checks (0.00s)
    --- PASS: TestService_Validate/provider_nomad_with_invalid_check_type (0.00s)
    --- PASS: TestService_Validate/provider_nomad_with_tls_skip_verify (0.00s)
    --- PASS: TestService_Validate/provider_nomad_with_connect (0.00s)
    --- PASS: TestService_Validate/provider_nomad_valid (0.00s)
    --- PASS: TestService_Validate/provider_consul_with_notes_too_long (0.00s)
PASS

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Overview of commits

• 202baa1