Revert "chore(test): Skip zone lockdown tests"

This reverts commit bfe7436.

The issue was indeed a bad default. Fix landed in
072f9f7

Author: mgirouard

internal/services/zone_lockdown/resource_test.go

@@ -11,7 +11,6 @@ import (
 )
 
 func TestAccCloudflareZoneLockdown(t *testing.T) {
-	t.Skip(`FIXME: Step 1/1 error: After applying this test step, the refresh plan was not empty.`)
 	zoneName := os.Getenv("CLOUDFLARE_DOMAIN")
 	zoneID := os.Getenv("CLOUDFLARE_ZONE_ID")
 	rnd := utils.GenerateRandomResourceName()
@@ -35,7 +34,6 @@ func TestAccCloudflareZoneLockdown(t *testing.T) {
 
 // test creating a config with only the required fields.
 func TestAccCloudflareZoneLockdown_OnlyRequired(t *testing.T) {
-	t.Skip(`FIXME: Step 1/1 error: After applying this test step, the refresh plan was not empty.`)
 	zoneName := os.Getenv("CLOUDFLARE_DOMAIN")
 	zoneID := os.Getenv("CLOUDFLARE_ZONE_ID")
 	rnd := utils.GenerateRandomResourceName()
@@ -58,7 +56,6 @@ func TestAccCloudflareZoneLockdown_OnlyRequired(t *testing.T) {
 }
 
 func TestAccCloudflareZoneLockdown_Import(t *testing.T) {
-	t.Skip(`FIXME: Step 1/1 error: After applying this test step, the refresh plan was not empty.`)
 	zoneName := os.Getenv("CLOUDFLARE_DOMAIN")
 	zoneID := os.Getenv("CLOUDFLARE_ZONE_ID")
 	rnd := utils.GenerateRandomResourceName()