Consolidate helm charts

CHANGES:
- Added an appVersion and icon to helm Chart.yaml
- Refactored to use `required` in chart manifests rather than
  outputting an error message in notes
- Namespaced `name` and `fullname` template partials to `vk`
- Enabled rbac apiVersion configuration
- Removed role-binding and service-account suffixes from resource
  names
- Fixed bug where virtual-kubelet service account would not be
  bound to cluster role if chart was installed outside the default
  namespace
- Removed hardcoded `azure` provider

BREAKING CHANGES:
- Virtual-Kubelet specific values previously nested under `env` are
  now declared at the top level of the values file.
- Azure provider configuration values previously nested under `env`
  are now at `providers.azure`

providers/azure/README.md

@@ -186,22 +186,14 @@ resources on your account on behalf of Kubernetes.
 
 You will need to enable ACI in your subscription:
 
-    ```cli
-    az provider register -n Microsoft.ContainerInstance
-    ```
+```cli
+az provider register -n Microsoft.ContainerInstance
+```
 
 ## Deployment of the ACI provider in your cluster
 
 Run these commands to deploy the virtual kubelet which connects your Kubernetes cluster to Azure Container Instances.
 
-If your cluster is an AKS cluster:
-
-```cli
-export VK_RELEASE=virtual-kubelet-for-aks-0.1.3
-````
-
-For any other type of Kubernetes cluster:
-
 ```cli
 export VK_RELEASE=virtual-kubelet-0.1.1
 ```