dashboard: rename builder dragonfly-amd64-5_6 to dragonfly-amd64-5_8

* DragonFly BSD 5.8 was released on March 3rd, 2020. This is the next release after 5.6.
* Gobuilder VM has been upgraded to 5.8 and the scripts adjusted.

Change-Id: I1d885359aedef8182e57f1ea004982f5060ae7af
GitHub-Last-Rev: 25fa394d4c1cfa4a0198e8be0991dcae5133b90e
GitHub-Pull-Request: golang/build#27
Reviewed-on: https://go-review.googlesource.com/c/build/+/222517
Run-TryBot: Dmitri Shuralyov <dmitshur@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
diff --git a/dashboard/builders.go b/dashboard/builders.go
index 44a344c..e969cce 100644
--- a/dashboard/builders.go
+++ b/dashboard/builders.go
@@ -362,7 +362,7 @@
 		env:         []string{"GOROOT_BOOTSTRAP=/usr/pkg/go112"},
 		OwnerGithub: "bsiegert",
 	},
-	"host-dragonfly-amd64-5_6": &HostConfig{
+	"host-dragonfly-amd64-5_8": &HostConfig{
 		IsReverse:   true,
 		ExpectNum:   1,
 		Notes:       "DragonFly BSD release version, run by DragonFly team",
@@ -2315,9 +2315,9 @@
 		},
 	})
 	addBuilder(BuildConfig{
-		Name:              "dragonfly-amd64-5_6",
-		HostType:          "host-dragonfly-amd64-5_6",
-		Notes:             "DragonFly BSD 5.6 release",
+		Name:              "dragonfly-amd64-5_8",
+		HostType:          "host-dragonfly-amd64-5_8",
+		Notes:             "DragonFly BSD 5.8 release",
 		shouldRunDistTest: noTestDirAndNoReboot,
 		SkipSnapshot:      true,
 	})
diff --git a/dashboard/builders_test.go b/dashboard/builders_test.go
index ce2133d..ab711d8 100644
--- a/dashboard/builders_test.go
+++ b/dashboard/builders_test.go
@@ -556,9 +556,9 @@
 		{b("dragonfly-amd64", "net"), onlyPost},
 		{b("dragonfly-amd64@go1.13", "net"), none}, // Dragonfly ABI changes only supported by Go 1.14+
 		{b("dragonfly-amd64@go1.13", "go"), none},  // Dragonfly ABI changes only supported by Go 1.14+
-		{b("dragonfly-amd64-5_6", "go"), onlyPost},
-		{b("dragonfly-amd64-5_6", "net"), onlyPost},
-		{b("dragonfly-amd64-5_6@go1.13", "net"), onlyPost},
+		{b("dragonfly-amd64-5_8", "go"), onlyPost},
+		{b("dragonfly-amd64-5_8", "net"), onlyPost},
+		{b("dragonfly-amd64-5_8@go1.13", "net"), onlyPost},
 
 		{b("linux-amd64-staticlockranking", "go"), onlyPost},
 		{b("linux-amd64-staticlockranking@go1.15", "go"), onlyPost},