cmd/makemac: add first security macOS trybot

For golang/go#67073.

Change-Id: Ic80c778a624b1f68b3407ba16fcbd2d1ce61c0dd
Reviewed-on: https://go-review.googlesource.com/c/build/+/582036
Reviewed-by: Michael Pratt <mpratt@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>

cmd/makemac/config.go

@@ -21,11 +21,18 @@ type swarmingConfig struct {
 	client swarming.Client
 }
 
-// Standard public swarming host.
-var publicSwarming = &swarmingConfig{
-	Host: "chromium-swarm.appspot.com",
-	Pool: "luci.golang.shared-workers",
-}
+var (
+	// Public swarming host.
+	publicSwarming = &swarmingConfig{
+		Host: "chromium-swarm.appspot.com",
+		Pool: "luci.golang.shared-workers",
+	}
+	// Security swarming host.
+	internalSwarming = &swarmingConfig{
+		Host: "chrome-swarming.appspot.com",
+		Pool: "luci.golang.security-try-workers",
+	}
+)
 
 // imageConfig describes how many instances of a specific image type should
 // exist.
@@ -84,6 +91,15 @@ var prodImageConfig = map[*swarmingConfig][]imageConfig{
 			MinCount: 10,
 		},
 	},
+	internalSwarming: {
+		{
+			Hostname: "darwin-amd64-14-security",
+			Cert:     "secret:symbolic-datum-552/darwin-amd64-14-security-cert",
+			Key:      "secret:symbolic-datum-552/darwin-amd64-14-security-key",
+			Image:    "3ec96f33cf17c85bd6d1bbf122c327bc9e5c62620c3ef9ff63e2db4feebdd8da",
+			MinCount: 1, // in the process of being brought up
+		},
+	},
 }
 
 // imageConfigMap returns a map from imageConfig.Image to imageConfig.