[Sample App] Support deployment of Consul sample app

[leecalcote]

Enhancement Description
Each service mesh generally has one or more associated sample applications that can be used to demonstrate the power of the given service mesh. Consul uses https://github.com/hashicorp/consul-k8s-l7-obs-guide as a sample application.

Desired Behavior
The Consul adapter currently supports deploying sample applications from other service meshes. It should support the canonical Consul sample app, so that users can get the most thorough tour of Consul's features.

[0xfirefist]

Hey @leecalcote,

Can I take this up? This will help me getting started with adapters.

[leecalcote]

@kalradev that's great idea. Even higher priority than this sample app is the addition of Learn Layer5 as a sample app to be supported by the adapter for Consul. The addition of that application means that the Consul adapter will support SMI conformance testing. Let's get you going on that app.

[0xfirefist]

Great!!
I will start with adding Learn Layer5.

[leecalcote]

Good deal. The Meshery adapter for Open Service Mesh and the Meshery adapter for Istio both support Learn Layer5 (SMI Conformance) and make for good references.

[mgfeller]

The Consul sample app requires quite a bit of additional setup.
I think it would be good if the code could be refactored before that, towards the Kuma-blueprint. I'll add a couple of issues for that, but started with a set of tests (#94).