cmd/coordinator: switch to new clusters and network.

For golang/go#48408.

Change-Id: I375daab69d97eefae00e5f9ef3eac88fc2f5e8b8
Reviewed-on: https://go-review.googlesource.com/c/build/+/350790
Trust: Heschi Kreinick <[email protected]>
Run-TryBot: Heschi Kreinick <[email protected]>
TryBot-Result: Go Bot <[email protected]>
Reviewed-by: Alexander Rakoczy <[email protected]>

Author: heschi

buildenv/envs.go

@@ -272,14 +272,13 @@ var Production = &Environment{
 	StaticIP:              "107.178.219.46",
 	PreferContainersOnCOS: true,
 	KubeBuild: KubeConfig{
-		Zone:   "us-central1-f",
+		Zone:   "us-central1-c",
 		Region: "us-central1",
 		Name:   "buildlets",
 	},
 	KubeServices: KubeConfig{
-		Zone:      "us-central1-f",
 		Region:    "us-central1",
-		Name:      "go",
+		Name:      "services",
 		Namespace: "prod",
 	},
 	DashURL:             "https://build.golang.org/",

buildlet/gce.go

@@ -129,7 +129,7 @@ func StartNewVM(creds *google.Credentials, buildEnv *buildenv.Environment, instN
 		NetworkInterfaces: []*compute.NetworkInterface{
 			&compute.NetworkInterface{
 				AccessConfigs: accessConfigs,
-				Network:       prefix + "/global/networks/default",
+				Network:       prefix + "/global/networks/default-vpc",
 			},
 		},