Over-constrained schema of exec block in provider configuration

[alexsomesan]

Terraform, Provider, Kubernetes versions

Terraform version: v0.15.5
Provider version: 0.4.1
Kubernetes version: any

Affected Resource(s)

Provider configuration

Terraform Configuration Files

provider "kubernetes-alpha" {
  host                   = data.aws_eks_cluster.cluster.endpoint
  cluster_ca_certificate = base64decode(data.aws_eks_cluster.cluster.certificate_authority.0.data)
  
   exec = {
     api_version = "client.authentication.k8s.io/v1alpha1"
     command     = "aws"
     args = [
       "eks",
       "get-token",
       "--cluster-name",
       data.aws_eks_cluster.cluster.name
     ]
   }
}

Debug Output

Error: Incorrect attribute value type
  on modules/terraform-eks-runner-module/providers.tf line 19, in provider "kubernetes-alpha":
  19:   exec = {
  20:     api_version = "client.authentication.k8s.io/v1alpha1"
  21:     command     = "aws"
  22:     args = [
  23:       "eks",
  24:       "get-token",
  25:       "--cluster-name",
  26:       data.aws_eks_cluster.cluster.name
  27:     ]
  28:   }
Inappropriate value for attribute "exec": attribute "env" is required.
Error: Terraform exited with code 1.
Error: Process completed with exit code 1

Panic Output

Steps to Reproduce

Expected Behavior

env attribute should not be mandatory in the exec block.

Actual Behavior

Provider requires users to specify empty env = {} attribute even when no environment values are needed.

Important Factoids

References

• https://kubernetes.slack.com/archives/CJY6ATQH4/p1622815120055200

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