fix: Update Google provider constraints to allow 4.x (#335)

* Updates google provider constraints

* Updates constraints for examples

* Uses new constraint syntax consistently

* Moves providers into versions file

* Uses ~> in simple TF project

* Adjusts module constraints

* Removes duplicate providers block

* Adds comments to explain failing examples

* Uses previously pinned provider for embedded examples

* Reverts test setup

* Updates deprecated constraint syntax

Author: jackwhelpton

examples/basic_auto_mode/main.tf

@@ -14,15 +14,6 @@
  * limitations under the License.
  */
 
-
-provider "null" {
-  version = "~> 2.1"
-}
-
-provider "google" {
-  version = "~> 3.45.0"
-}
-
 # [START vpc_auto_create]
 resource "google_compute_network" "vpc_network" {
   project                 = var.project_id # Replace this with your project ID in quotes

examples/basic_auto_mode/versions.tf

@@ -16,4 +16,13 @@
 
 terraform {
   required_version = ">=0.12.6"
+
+  required_providers {
+    google = {
+      version = "~> 4.0"
+    }
+    null = {
+      version = "~> 2.1"
+    }
+  }
 }

examples/basic_custom_mode/main.tf

@@ -14,15 +14,6 @@
  * limitations under the License.
  */
 
-
-provider "null" {
-  version = "~> 2.1"
-}
-
-provider "google" {
-  version = "~> 3.45.0"
-}
-
 # [START vpc_custom_create]
 resource "google_compute_network" "vpc_network" {
   project                 = var.project_id # Replace this with your project ID in quotes

examples/basic_custom_mode/versions.tf

@@ -16,4 +16,13 @@
 
 terraform {
   required_version = ">=0.12.6"
+
+  required_providers {
+    google = {
+      version = "~> 4.0"
+    }
+    null = {
+      version = "~> 2.1"
+    }
+  }
 }

examples/basic_firewall_rule/main.tf

@@ -14,15 +14,6 @@
  * limitations under the License.
  */
 
-
-provider "null" {
-  version = "~> 2.1"
-}
-
-provider "google" {
-  version = "~> 3.45.0"
-}
-
 # [START vpc_firewall_create]
 resource "google_compute_firewall" "rules" {
   project     = var.project_id # Replace this with your project ID in quotes

examples/basic_firewall_rule/versions.tf

@@ -16,5 +16,13 @@
 
 terraform {
   required_version = ">=0.12.6"
-}
 
+  required_providers {
+    google = {
+      version = "~> 4.0"
+    }
+    null = {
+      version = "~> 2.1"
+    }
+  }
+}

examples/basic_secondary_ranges/main.tf

@@ -14,18 +14,6 @@
  * limitations under the License.
  */
 
-
-terraform {
-  required_providers {
-    google = {
-      version = ">= 3.45.0"
-    }
-    null = {
-      version = ">= 2.1.0"
-    }
-  }
-}
-
 # [START vpc_secondary_range_create]
 resource "google_compute_subnetwork" "network-with-private-secondary-ip-ranges" {
   project       = var.project_id # Replace this with your project ID in quotes

examples/basic_secondary_ranges/versions.tf

@@ -16,4 +16,13 @@
 
 terraform {
   required_version = ">=0.12.6"
+
+  required_providers {
+    google = {
+      version = "~> 4.0"
+    }
+    null = {
+      version = "~> 2.1"
+    }
+  }
 }

examples/basic_shared_vpc/main.tf

@@ -14,15 +14,6 @@
  * limitations under the License.
  */
 
-
-provider "null" {
-  version = "~> 2.1"
-}
-
-provider "google" {
-  version = "~> 3.45.0"
-}
-
 # [START vpc_shared_vpc_host_project_enable]
 resource "google_compute_shared_vpc_host_project" "host" {
   project = var.project # Replace this with your host project ID in quotes

examples/basic_shared_vpc/versions.tf

@@ -16,4 +16,13 @@
 
 terraform {
   required_version = ">=0.12.6"
+
+  required_providers {
+    google = {
+      version = "~> 4.0"
+    }
+    null = {
+      version = "~> 2.1"
+    }
+  }
 }