feat: removed support for deprecated version 3.3 (#132)

Co-authored-by: Khuzaima-Shakeel <[email protected]>
Co-authored-by: Conall Ó Cofaigh <[email protected]>

Author: 3 people

tests/pr_test.go

@@ -95,7 +95,7 @@ func TestRunCompleteUpgradeExample(t *testing.T) {
 		ResourceGroup:      resourceGroup,
 		BestRegionYAMLPath: regionSelectionPath,
 		TerraformVars: map[string]interface{}{
-			"etcd_version": "3.3", // should always test the lowest available version of etcd that the module supports
+			"etcd_version": "3.4", // should always test the lowest available version of etcd that the module supports
 			"users": []map[string]interface{}{
 				{
 					"name":     "testuser",

variables.tf

@@ -20,10 +20,9 @@ variable "etcd_version" {
     condition = anytrue([
       var.etcd_version == null,
       var.etcd_version == "3.5",
-      var.etcd_version == "3.4",
-      var.etcd_version == "3.3"
+      var.etcd_version == "3.4"
     ])
-    error_message = "Version must be 3.5, 3.4 or 3.3. "
+    error_message = "Version must be 3.5 or 3.4."
   }
 }