Fix acceptance test image reversion (#8349)

builtin/providers/google/resource_compute_autoscaler_test.go

@@ -139,7 +139,7 @@ resource "google_compute_instance_template" "foobar" {
 	tags = ["foo", "bar"]
 
 	disk {
-		source_image = "debian-cloud/debian-7-wheezy-v20160301"
+		source_image = "debian-cloud/debian-8-jessie-v20160803"
 		auto_delete = true
 		boot = true
 	}
@@ -196,7 +196,7 @@ resource "google_compute_instance_template" "foobar" {
 	tags = ["foo", "bar"]
 
 	disk {
-		source_image = "debian-cloud/debian-7-wheezy-v20160301"
+		source_image = "debian-cloud/debian-8-jessie-v20160803"
 		auto_delete = true
 		boot = true
 	}

builtin/providers/google/resource_compute_instance_group_manager_test.go

@@ -277,7 +277,7 @@ func testAccInstanceGroupManager_basic(template, target, igm1, igm2 string) stri
 		tags = ["foo", "bar"]
 
 		disk {
-			source_image = "debian-cloud/debian-7-wheezy-v20160301"
+			source_image = "debian-cloud/debian-8-jessie-v20160803"
 			auto_delete = true
 			boot = true
 		}
@@ -331,7 +331,7 @@ func testAccInstanceGroupManager_update(template, target, igm string) string {
 		tags = ["foo", "bar"]
 
 		disk {
-			source_image = "debian-cloud/debian-7-wheezy-v20160301"
+			source_image = "debian-cloud/debian-8-jessie-v20160803"
 			auto_delete = true
 			boot = true
 		}
@@ -380,7 +380,7 @@ func testAccInstanceGroupManager_update2(template1, target, template2, igm strin
 		tags = ["foo", "bar"]
 
 		disk {
-			source_image = "debian-cloud/debian-7-wheezy-v20160301"
+			source_image = "debian-cloud/debian-8-jessie-v20160803"
 			auto_delete = true
 			boot = true
 		}
@@ -411,7 +411,7 @@ func testAccInstanceGroupManager_update2(template1, target, template2, igm strin
 		tags = ["foo", "bar"]
 
 		disk {
-			source_image = "debian-cloud/debian-7-wheezy-v20160301"
+			source_image = "debian-cloud/debian-8-jessie-v20160803"
 			auto_delete = true
 			boot = true
 		}
@@ -456,7 +456,7 @@ func testAccInstanceGroupManager_updateLifecycle(tag, igm string) string {
 		tags = ["%s"]
 
 		disk {
-			source_image = "debian-cloud/debian-7-wheezy-v20160301"
+			source_image = "debian-cloud/debian-8-jessie-v20160803"
 			auto_delete = true
 			boot = true
 		}