dashboard, env/freebsd-amd64: update to FreeBSD 10.3 and 11.1.

freebsd.org says that the current supported releases are:

    > Production: 11.1, 11.0, 10.4, 10.3

Previously we had builders for 9.3, 10.1, and 11.0.

We'll keep FreeBSD 9.3 for now (as it's still supported by the last
two released Go versions), but we'll stop testing FreeBSD 9.3 at tip
shortly here (that will be a separate change).

This CL updates our builders from 11.0 to 11.1 and 10.1 to 10.3,
spanning the range from the old to newest supported release. We'll
stop testing 10.4 and 11.0, as that's a bit overkill.

Another reason we're doing 10.3 instead of 10.4 is because the Go 1.9
release notes (https://golang.org/doc/go1.9#freebsd) said that future
Go releases (Go 1.10) will require FreeBSD 10.3+, so we need to test
FreeBSD 10.3, being the oldest. (Go has historically "supported"
FreeBSD releases a bit longer than they're officially supported by
FreeBSD, partly due to our out-of-sync release cycles.)

Fixes golang/go#19303
Fixes golang/go#22854

Change-Id: I69589000b1c87aecf054857f514cc48ccedf752f
Reviewed-on: https://go-review.googlesource.com/80297
Reviewed-by: Andrew Bonventre <[email protected]>

Author: bradfitz

dashboard/builders.go

@@ -143,18 +143,18 @@ var Hosts = map[string]*HostConfig{
 		goBootstrapURLTmpl: "https://storage.googleapis.com/$BUCKET/go1.4-freebsd-amd64.tar.gz",
 		SSHUsername:        "gopher",
 	},
-	"host-freebsd-101-gce": &HostConfig{
-		VMImage:            "freebsd-amd64-gce101",
-		Notes:              "FreeBSD 10.1; GCE VM is built from script in build/env/freebsd-amd64",
+	"host-freebsd-10_3": &HostConfig{
+		VMImage:            "freebsd-amd64-103",
+		Notes:              "FreeBSD 10.3; GCE VM is built from script in build/env/freebsd-amd64",
 		machineType:        "n1-highcpu-4",
 		buildletURLTmpl:    "http://storage.googleapis.com/$BUCKET/buildlet.freebsd-amd64", // TODO(bradfitz): why was this http instead of https?
 		goBootstrapURLTmpl: "https://storage.googleapis.com/$BUCKET/go1.4-freebsd-amd64.tar.gz",
 		env:                []string{"CC=clang"},
 		SSHUsername:        "gopher",
 	},
-	"host-freebsd-110": &HostConfig{
-		VMImage:            "freebsd-amd64-110",
-		Notes:              "FreeBSD 11.0; GCE VM is built from script in build/env/freebsd-amd64",
+	"host-freebsd-11_1": &HostConfig{
+		VMImage:            "freebsd-amd64-111",
+		Notes:              "FreeBSD 11.1; GCE VM is built from script in build/env/freebsd-amd64",
 		machineType:        "n1-highcpu-4",
 		buildletURLTmpl:    "http://storage.googleapis.com/$BUCKET/buildlet.freebsd-amd64", // TODO(bradfitz): why was this http instead of https?
 		goBootstrapURLTmpl: "https://storage.googleapis.com/$BUCKET/go1.4-freebsd-amd64.tar.gz",
@@ -715,8 +715,9 @@ func (c *BuildConfig) BuildSubrepos() bool {
 		"darwin-amd64-10_10",
 		"darwin-amd64-10_11",
 		"darwin-386-10_11",
-		"freebsd-386-gce101", "freebsd-amd64-gce101",
-		"freebsd-386-110", "freebsd-amd64-110",
+		"freebsd-amd64-93",
+		"freebsd-386-10_3", "freebsd-amd64-10_3",
+		"freebsd-386-11_1", "freebsd-amd64-11_1",
 		"linux-386", "linux-amd64", "linux-amd64-nocgo",
 		"openbsd-386-60", "openbsd-amd64-60",
 		"openbsd-386-62", "openbsd-amd64-62",
@@ -864,34 +865,36 @@ func init() {
 	addBuilder(BuildConfig{
 		Name:      "freebsd-amd64-gce93",
 		HostType:  "host-freebsd-93-gce",
-		MaxAtOnce: 2, // arbitrary, just not unlimited; delete when we have proper scheduler
+		TryOnly:   true,  // don't run regular build...
+		TryBot:    false, // .. and don't be a trybot. Only for gomote.
+		MaxAtOnce: 2,     // arbitrary, just not unlimited; delete when we have proper scheduler
 	})
 	addBuilder(BuildConfig{
-		Name:      "freebsd-amd64-gce101",
-		HostType:  "host-freebsd-101-gce",
+		Name:      "freebsd-amd64-10_3",
+		HostType:  "host-freebsd-10_3",
 		MaxAtOnce: 2, // arbitrary, just not unlimited; delete when we have proper scheduler
 	})
 	addBuilder(BuildConfig{
-		Name:              "freebsd-amd64-110",
-		HostType:          "host-freebsd-110",
+		Name:              "freebsd-amd64-11_1",
+		HostType:          "host-freebsd-11_1",
 		TryBot:            true,
 		numTryTestHelpers: 4,
 		MaxAtOnce:         2, // arbitrary, just not unlimited; delete when we have proper scheduler
 	})
 	addBuilder(BuildConfig{
 		Name:      "freebsd-amd64-race",
-		HostType:  "host-freebsd-110",
+		HostType:  "host-freebsd-11_1",
 		MaxAtOnce: 2, // arbitrary, just not unlimited; delete when we have proper scheduler
 	})
 	addBuilder(BuildConfig{
-		Name:      "freebsd-386-gce101",
-		HostType:  "host-freebsd-101-gce",
+		Name:      "freebsd-386-10_3",
+		HostType:  "host-freebsd-10_3",
 		env:       []string{"GOARCH=386", "GOHOSTARCH=386"},
 		MaxAtOnce: 2, // arbitrary, just not unlimited; delete when we have proper scheduler
 	})
 	addBuilder(BuildConfig{
-		Name:      "freebsd-386-110",
-		HostType:  "host-freebsd-110",
+		Name:      "freebsd-386-11_1",
+		HostType:  "host-freebsd-11_1",
 		env:       []string{"GOARCH=386", "GOHOSTARCH=386"},
 		MaxAtOnce: 2, // arbitrary, just not unlimited; delete when we have proper scheduler
 	})

env/freebsd-amd64/README

@@ -6,13 +6,13 @@ make.bash should be run on a Linux box with qemu.
 After it completes, it creates a file freebsd-amd64-gce101.tar.gz
 
 Then:
-    gsutil cp -a public-read freebsd-amd64-gce101.tar.gz gs://go-builder-data/freebsd-amd64-gce101.tar.gz
+    gsutil cp -a public-read freebsd-amd64-103.tar.gz gs://go-builder-data/freebsd-amd64-103.tar.gz
 Or just use the web UI at:
     https://console.developers.google.com/project/symbolic-datum-552/storage/browser/go-builder-data/
 
 Then:
-   gcloud compute --project symbolic-datum-552 images delete freebsd-amd64-gce101
-   gcloud compute --project symbolic-datum-552 images create freebsd-amd64-gce101 --source-uri gs://go-builder-data/freebsd-amd64-gce101.tar.gz
+   gcloud compute --project symbolic-datum-552 images delete freebsd-amd64-103
+   gcloud compute --project symbolic-datum-552 images create freebsd-amd64-103 --source-uri gs://go-builder-data/freebsd-amd64-103.tar.gz
 
 The VM needs to be run with the GCE metadata attribute "buildlet-binary-url" set to a URL
 of the FreeBSD buildlet (cross-compiled, typically).

env/freebsd-amd64/make.bash

@@ -9,7 +9,7 @@
 # SSH is enabled, and a user gopher, password gopher, is created.
 
 # Only tested on Ubuntu 16.04.
-# Requires packages: qemu expect mkisofs
+# Requires packages: qemu expect genisoimage
 
 set -e
 
@@ -41,6 +41,12 @@ case $1 in
   readonly VERSION_TRAILER=
   readonly DNS_LOOKUP=drill
   readonly SHA256=f9f7fcac1acfe210979a72e0642a70fcf9c9381cc1884e966eac8381c724158c
+  ;;
+11.1)
+  readonly VERSION=11.1
+  readonly VERSION_TRAILER=
+  readonly DNS_LOOKUP=drill
+  readonly SHA256=233c6b269a29c1ce38bb4eb861251d1c74643846c1de937b8e31cc0316632bc0
 ;;
 *)
   echo "Usage: $0 <version>"
@@ -122,7 +128,7 @@ echo '-h' > /boot.conf
 echo 'console="comconsole"' >> /boot/loader.conf
 EOF
 
-mkisofs -r -o config.iso iso/
+genisoimage -r -o config.iso iso/
 # TODO(wathiede): remove sleep
 sleep 2