Crash when label is specified as a boolean

[majelbstoat]

Terraform Version

Relevant versions:

terraform [Terraform v0.11.2]

• provider.kubernetes: version = "~> 1.0"

Affected Resource(s)

At a minimum:

• kubernetes_replication_controller
• kubernetes_service

But probably others as well, and this may well be a bug in Terraform core.

Terraform Configuration Files

Partial minimal repro, to give you the idea:

resource "kubernetes_replication_controller" "default" {
  metadata {
    name = "${var.service_name}"

    labels {
      env       = "${terraform.workspace}"
      app       = "${var.service_name}"
      terraform = true # <-This line causes the crash.
    }
  }

  # Rest of spec elided
}

Would guess that this can be repro'd by adding any boolean label to any resource.

Panic Output

panic: interface conversion: interface {} is bool, not string

Expected Behavior

I would have expected automatic conversion of boolean to string.

Actual Behavior

Hard crash. I've confirmed that modifying the label to terraform="true" fixes the problem.