Move "common/config" common types into cfgtypes.

logdog/client/butler/bootstrap/env.go

Index: logdog/client/butler/bootstrap/env.go
diff --git a/logdog/client/butler/bootstrap/env.go b/logdog/client/butler/bootstrap/env.go
index b472014c67561f3f4f94ab9dc935b4997af3c751..40478559f831148ebb8576f7124ec9da4d6f2851 100644
--- a/logdog/client/butler/bootstrap/env.go
+++ b/logdog/client/butler/bootstrap/env.go
@@ -6,10 +6,10 @@
 package bootstrap
 
 import (
-	"github.com/luci/luci-go/common/config"
 	"github.com/luci/luci-go/common/system/environ"
 	"github.com/luci/luci-go/logdog/client/butlerlib/bootstrap"
 	"github.com/luci/luci-go/logdog/common/types"
+	"github.com/luci/luci-go/luci_config/common/cfgtypes"
 )
 
 // Environment is the set of configuration parameters for the bootstrap.
@@ -20,7 +20,7 @@ type Environment struct {
 
 	// Project is the project name. If not empty, this will be exported to
 	// subprocesses.
-	Project config.ProjectName
+	Project cfgtypes.ProjectName
 	// Prefix is the prefix name. If not empty, this will be exported to
 	// subprocesses.
 	Prefix types.StreamName