update modules and examples for tf 0.13

Author: robmorgan

examples/client-certificate/main.tf

@@ -15,7 +15,10 @@ provider "google-beta" {
 terraform {
   # The modules used in this example have been updated with 0.12 syntax, which means the example is no longer
   # compatible with any versions below 0.12.
-  required_version = ">= 0.12"
+  # This module is now only being tested with Terraform 0.13.x. However, to make upgrading easier, we are setting
+  # 0.12.26 as the minimum version, as that version added support for required_providers with source URLs, making it
+  # forwards compatible with 0.13.x code.
+  required_version = ">= 0.12.26"
 }
 
 # ------------------------------------------------------------------------------

examples/mysql-private-ip/main.tf

@@ -13,9 +13,10 @@ provider "google-beta" {
 }
 
 terraform {
-  # The modules used in this example have been updated with 0.12 syntax, which means the example is no longer
-  # compatible with any versions below 0.12.
-  required_version = ">= 0.12"
+  # This module is now only being tested with Terraform 0.13.x. However, to make upgrading easier, we are setting
+  # 0.12.26 as the minimum version, as that version added support for required_providers with source URLs, making it
+  # forwards compatible with 0.13.x code.
+  required_version = ">= 0.12.26"
 }
 
 # ------------------------------------------------------------------------------

examples/mysql-public-ip/main.tf

@@ -13,9 +13,10 @@ provider "google-beta" {
 }
 
 terraform {
-  # The modules used in this example have been updated with 0.12 syntax, which means the example is no longer
-  # compatible with any versions below 0.12.
-  required_version = ">= 0.12"
+  # This module is now only being tested with Terraform 0.13.x. However, to make upgrading easier, we are setting
+  # 0.12.26 as the minimum version, as that version added support for required_providers with source URLs, making it
+  # forwards compatible with 0.13.x code.
+  required_version = ">= 0.12.26"
 }
 
 # ------------------------------------------------------------------------------

examples/mysql-replicas/main.tf

@@ -13,9 +13,10 @@ provider "google-beta" {
 }
 
 terraform {
-  # The modules used in this example have been updated with 0.12 syntax, which means the example is no longer
-  # compatible with any versions below 0.12.
-  required_version = ">= 0.12"
+  # This module is now only being tested with Terraform 0.13.x. However, to make upgrading easier, we are setting
+  # 0.12.26 as the minimum version, as that version added support for required_providers with source URLs, making it
+  # forwards compatible with 0.13.x code.
+  required_version = ">= 0.12.26"
 }
 
 # ------------------------------------------------------------------------------

examples/postgres-private-ip/main.tf

@@ -13,9 +13,10 @@ provider "google-beta" {
 }
 
 terraform {
-  # The modules used in this example have been updated with 0.12 syntax, which means the example is no longer
-  # compatible with any versions below 0.12.
-  required_version = ">= 0.12"
+  # This module is now only being tested with Terraform 0.13.x. However, to make upgrading easier, we are setting
+  # 0.12.26 as the minimum version, as that version added support for required_providers with source URLs, making it
+  # forwards compatible with 0.13.x code.
+  required_version = ">= 0.12.26"
 }
 
 # ------------------------------------------------------------------------------

examples/postgres-public-ip/main.tf

@@ -13,9 +13,10 @@ provider "google-beta" {
 }
 
 terraform {
-  # The modules used in this example have been updated with 0.12 syntax, which means the example is no longer
-  # compatible with any versions below 0.12.
-  required_version = ">= 0.12"
+  # This module is now only being tested with Terraform 0.13.x. However, to make upgrading easier, we are setting
+  # 0.12.26 as the minimum version, as that version added support for required_providers with source URLs, making it
+  # forwards compatible with 0.13.x code.
+  required_version = ">= 0.12.26"
 }
 
 # ------------------------------------------------------------------------------

examples/postgres-replicas/main.tf

@@ -13,9 +13,10 @@ provider "google-beta" {
 }
 
 terraform {
-  # The modules used in this example have been updated with 0.12 syntax, which means the example is no longer
-  # compatible with any versions below 0.12.
-  required_version = ">= 0.12"
+  # This module is now only being tested with Terraform 0.13.x. However, to make upgrading easier, we are setting
+  # 0.12.26 as the minimum version, as that version added support for required_providers with source URLs, making it
+  # forwards compatible with 0.13.x code.
+  required_version = ">= 0.12.26"
 }
 
 # ------------------------------------------------------------------------------

main.tf

@@ -13,9 +13,10 @@ provider "google-beta" {
 }
 
 terraform {
-  # The modules used in this example have been updated with 0.12 syntax, which means the example is no longer
-  # compatible with any versions below 0.12.
-  required_version = ">= 0.12"
+  # This module is now only being tested with Terraform 0.13.x. However, to make upgrading easier, we are setting
+  # 0.12.26 as the minimum version, as that version added support for required_providers with source URLs, making it
+  # forwards compatible with 0.13.x code.
+  required_version = ">= 0.12.26"
 }
 
 # ------------------------------------------------------------------------------

modules/cloud-sql/main.tf

@@ -4,6 +4,13 @@
 # election, replication, failover, backups, patching, and encryption.
 # ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
+terraform {
+  # This module is now only being tested with Terraform 0.13.x. However, to make upgrading easier, we are setting
+  # 0.12.26 as the minimum version, as that version added support for required_providers with source URLs, making it
+  # forwards compatible with 0.13.x code.
+  required_version = ">= 0.12.26"
+}
+
 # ------------------------------------------------------------------------------
 # PREPARE LOCALS
 #