The dependencies.json file should allow an override check condition (for non NAME services)

[ctorrao]

When we have an external dependency that does not have NAME nor we can control the source code of that dependency it makes sense to allow a different dependency check. For instance, check for a simple HTTP GET an check the returned HTTP Status Code.

Proposal of change:
{ "name": "WebPA Tridium", "min_version": "1.0", "max_version": "1.*", "check_override_uri": "{connection_string}/health", "check_override_codes": "200;400;401", "connection_string": { "locator": "IConfiguration", "key": "WebPaHttpClient:BaseUrl" } }

New properties:

• check_override_uri
  The URI used to check if the dependency is up and running
• check_override_codes
  The accepted HTTP status codes (or that follow the same network like status code format) for the NAME to consider the dependency status as "Ok", otherwise it should be considered "Error"

[Symbianx]

I understand the requirement, but I don't think the best way to handle it is to have such a generic implementation.

We already have the IVersionResolver interface which exposes the contract to fetch the state of a dependency. I think we should leverage this and allow the developer to specify its own implementation.

Just like what we did for the IConnectionStringProvider.