fix: Removed 'upgrade_install' arg in the main.tf for Helm 3.x compatability

[wamsatson]

↪️ Pull Request

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📒 Description

Remove the upgrade_install argument from helm_release resource to fix compatibility with Helm provider >= 3.0.

🕶️ Types of changes

• Core
• Bugfix
• New feature
• Enhancement/optimization
• Documentation
• Dependencies

🤯 List of changes

The upgrade_install argument was added here but causes errors with the upgrade of the Helm version

Error: Unsupported argument "upgrade_install" is not expected here.

👫 Relationships

🔎 Review hints

In case the versions of things matter:

❯ terragrunt --version
terragrunt version 0.71.5
❯ terraform --version
Terraform v1.5.7
on darwin_arm64
+ provider registry.terraform.io/hashicorp/helm v3.0.2

🚨 Test instructions

1. Create a test directory:
   mkdir helm-test && cd helm-test && touch terragrunt.hcl

2. Paste this basic terragrunt in the terragrunt.hcl:

terraform {
  source = "tfr:///terraform-module/release/helm?version=2.9.1"
}

inputs = {
  name       = "test-app"
  namespace  = "default" 
  repository = "https://charts.bitnami.com/bitnami"
  
  app = {
    name    = "test-nginx"
    chart   = "nginx"  
    deploy  = true
    version = "15.1.0"
  }
  
  values = [""]
}

3. Run terragrunt init
4. Run terragrunt plan , and you should expect to see an error that looks like:

❯ terragrunt plan
16:07:58.080 INFO   Downloading Terraform configurations from tfr:///terraform-module/release/helm?version=2.9.1 into ./.terragrunt-cache/GGYofYU_9E7M9qgPVvudKFa8ixc/7fGEBRhljozgWJzF6D5kU7_RvaE
16:07:58.592 INFO   terraform: Initializing the backend...
16:07:58.595 INFO   terraform: Initializing provider plugins...
16:07:58.595 INFO   terraform: - Finding hashicorp/helm versions matching ">= 3.0.0"...
16:07:58.786 INFO   terraform: - Installing hashicorp/helm v3.0.2...
16:07:59.338 INFO   terraform: - Installed hashicorp/helm v3.0.2 (signed by HashiCorp)
16:07:59.338 INFO   terraform: Terraform has created a lock file .terraform.lock.hcl to record the provider
16:07:59.338 INFO   terraform: selections it made above. Include this file in your version control repository
16:07:59.338 INFO   terraform: so that Terraform can guarantee to make the same selections by default when
16:07:59.338 INFO   terraform: you run "terraform init" in the future.
16:07:59.339 INFO   terraform: Terraform has been successfully initialized!
16:07:59.339 INFO   terraform: 
16:07:59.339 INFO   terraform: You may now begin working with Terraform. Try running "terraform plan" to see
16:07:59.339 INFO   terraform: any changes that are required for your infrastructure. All Terraform commands
16:07:59.339 INFO   terraform: should now work.
16:07:59.339 INFO   terraform: If you ever set or change modules or backend configuration for Terraform,
16:07:59.339 INFO   terraform: rerun this command to reinitialize your working directory. If you forget, other
16:07:59.339 INFO   terraform: commands will detect it and remind you to do so if necessary.
16:08:02.644 STDERR terraform: ╷
16:08:02.644 STDERR terraform: │ Error: Unsupported argument
16:08:02.644 STDERR terraform: │ 
16:08:02.644 STDERR terraform: │   on main.tf line 33, in resource "helm_release" "this":
16:08:02.644 STDERR terraform: │   33:   upgrade_install            = lookup(var.app, "upgrade_install", false)
16:08:02.644 STDERR terraform: │ 
16:08:02.644 STDERR terraform: │ An argument named "upgrade_install" is not expected here.
16:08:02.644 STDERR terraform: ╵
16:08:02.647 ERROR  terraform invocation failed in ./.terragrunt-cache/GGYofYU_9E7M9qgPVvudKFa8ixc/7fGEBRhljozgWJzF6D5kU7_RvaE
16:08:02.647 ERROR  error occurred:

* Failed to execute "terraform plan" in ./.terragrunt-cache/GGYofYU_9E7M9qgPVvudKFa8ixc/7fGEBRhljozgWJzF6D5kU7_RvaE
  ╷
  │ Error: Unsupported argument
  │ 
  │   on main.tf line 33, in resource "helm_release" "this":
  │   33:   upgrade_install            = lookup(var.app, "upgrade_install", false)
  │ 
  │ An argument named "upgrade_install" is not expected here.
  ╵
  
  exit status 1

5. Commenting out the upgrade_install argument in the terragrunt-cache/....../main.tf lets you run terragrunt plan error free

Checklist

• My code follows the code style of this project.
• I have read the CONTRIBUTING document.
• [] Added/updated unit tests for this change
• I have tested the changes and verified that they work and don't break anything (as well as I can manage).
• Filled out test instructions (In case there aren't any unit tests)
• I followed the existing code standards and didn't mess up the formatting.
• My change requires a change to the documentation.
• I did my best to add documentation to any public classes or methods I added.
• Included links to related issues/PRs