Accommodate NomadSecrets store to resolve Nextflow config-secrets

[abhi18av]

Actually, I must add a clarification here since as of now we have two functional scenarios

Setup	LocalStore	NomadStore
Config vars	✅	🔴
Job vars	✅	✅
sun-nomadlab	✅	✅

✅ Scenario-1

Config vars => LocalSecret store

Job vars => LocalSecret store

✅ Scenario-2

Config vars => LocalSecret store

Job vars => NomadSecret store

🔴 Scenario-3

Config vars => NomadSecret store

Job vars => NomadSecret store

Conclusion

@jagedn , please correct me if I'm wrong - in scenario-3 we can't use the NomadSecret store for config vars due to the current design decisions on the Nextflow side, however we can support scenario-1 and scenario-2 just fine.

Originally posted by @abhi18av in #75 (comment)

[jagedn]

I think I founded an easy way to have also in config vars

obviously only case we'll not able to use secrets will be in the own plugin configuration, i.e.,

client {
        address = secrets.MY_HOST
    }

[abhi18av]

Related #81 #79

[abhi18av]

@jagedn , the #81 should address scenario-3 described here right? #76 (comment)

[jagedn]

@jagedn , the #81 should address scenario-3 described here right? #76 (comment)

yes, I think with this PR we cover all use cases