Upgrade to Terraform 0.13

Closes #788

Signed-off-by: Mateusz Gozdek <mateusz@kinvolk.io>

Author: invidian

assets/lokomotive-kubernetes/aws/flatcar-linux/kubernetes/require.tf

@@ -0,0 +1,32 @@
+# Terraform version and plugin versions
+
+terraform {
+  required_version = ">= 0.13.0"
+
+  required_providers {
+    aws = {
+      source  = "hashicorp/aws"
+      version = "2.48.0"
+    }
+    ct = {
+      source  = "poseidon/ct"
+      version = "0.6.1"
+    }
+    local = {
+      source  = "hashicorp/local"
+      version = "~> 1.2"
+    }
+    null = {
+      source  = "hashicorp/null"
+      version = "~> 2.1"
+    }
+    template = {
+      source  = "hashicorp/template"
+      version = "~> 2.1"
+    }
+    tls = {
+      source  = "hashicorp/tls"
+      version = "~> 2.0"
+    }
+  }
+}

assets/lokomotive-kubernetes/aws/flatcar-linux/kubernetes/versions.tf

@@ -0,0 +1,20 @@
+# Terraform version and plugin versions
+
+terraform {
+  required_version = ">= 0.13.0"
+
+  required_providers {
+    aws = {
+      source  = "hashicorp/aws"
+      version = "2.48.0"
+    }
+    ct = {
+      source  = "poseidon/ct"
+      version = "0.6.1"
+    }
+    template = {
+      source  = "hashicorp/template"
+      version = "~> 2.1"
+    }
+  }
+}

assets/lokomotive-kubernetes/aws/flatcar-linux/kubernetes/workers/require.tf

@@ -0,0 +1,29 @@
+terraform {
+  required_providers {
+    azurerm = {
+      source  = "hashicorp/azurerm"
+      version = "1.35.0"
+    }
+    ct = {
+      source  = "poseidon/ct"
+      version = "~> 0.6"
+    }
+    local = {
+      source  = "hashicorp/local"
+      version = "1.4.0"
+    }
+    null = {
+      source  = "hashicorp/null"
+      version = "~> 2.1"
+    }
+    template = {
+      source  = "hashicorp/template"
+      version = "~> 2.1"
+    }
+    tls = {
+      source  = "hashicorp/tls"
+      version = "~> 2.0"
+    }
+  }
+  required_version = ">= 0.13"
+}

assets/lokomotive-kubernetes/aws/flatcar-linux/kubernetes/workers/versions.tf

@@ -0,0 +1,17 @@
+terraform {
+  required_providers {
+    azurerm = {
+      source  = "hashicorp/azurerm"
+      version = "1.35.0"
+    }
+    ct = {
+      source  = "poseidon/ct"
+      version = "~> 0.6"
+    }
+    template = {
+      source  = "hashicorp/template"
+      version = "~> 2.1"
+    }
+  }
+  required_version = ">= 0.13"
+}

assets/lokomotive-kubernetes/azure/flatcar-linux/kubernetes/require.tf

@@ -0,0 +1,32 @@
+# Terraform version and plugin versions
+
+terraform {
+  required_version = ">= 0.13.0"
+
+  required_providers {
+    ct = {
+      source  = "poseidon/ct"
+      version = "~> 0.6"
+    }
+    local = {
+      source  = "hashicorp/local"
+      version = "~> 1.2"
+    }
+    null = {
+      source  = "hashicorp/null"
+      version = "~> 2.1"
+    }
+    template = {
+      source  = "hashicorp/template"
+      version = "~> 2.1"
+    }
+    tls = {
+      source  = "hashicorp/tls"
+      version = "~> 2.0"
+    }
+    matchbox = {
+      source  = "poseidon/matchbox"
+      version = "~> 0.4"
+    }
+  }
+}

assets/lokomotive-kubernetes/azure/flatcar-linux/kubernetes/versions.tf

@@ -1,10 +1,19 @@
 # Terraform version and plugin versions
 
 terraform {
-  required_version = ">= 0.12"
+  required_version = ">= 0.13"
   required_providers {
-    local    = "~> 1.2"
-    template = "~> 2.1"
-    tls      = "~> 2.0"
+    local = {
+      source  = "hashicorp/local"
+      version = "~> 1.2"
+    }
+    template = {
+      source  = "hashicorp/template"
+      version = "~> 2.1"
+    }
+    tls = {
+      source  = "hashicorp/tls"
+      version = "~> 2.0"
+    }
   }
 }