Add redshift database plugin (#8299)

* feat: add redshift database plugin

* build: update vendored libraries

* docs: add reference doc for redshift variant of the database secrets engine

* feat: set middlewear type name for better metrics naming (#8346)

Co-authored-by: Becca Petrin <beccapetrin@gmail.com>

command/base_predict_test.go

@@ -386,6 +386,7 @@ func TestPredict_Plugins(t *testing.T) {
 				"postgresql-database-plugin",
 				"rabbitmq",
 				"radius",
+				"redshift-database-plugin",
 				"ssh",
 				"totp",
 				"transit",

helper/builtinplugins/registry.go

@@ -28,6 +28,7 @@ import (
 	dbMssql "github.com/hashicorp/vault/plugins/database/mssql"
 	dbMysql "github.com/hashicorp/vault/plugins/database/mysql"
 	dbPostgres "github.com/hashicorp/vault/plugins/database/postgresql"
+	dbRedshift "github.com/hashicorp/vault/plugins/database/redshift"
 	"github.com/hashicorp/vault/sdk/database/helper/credsutil"
 	"github.com/hashicorp/vault/sdk/helper/consts"
 	"github.com/hashicorp/vault/sdk/logical"
@@ -97,6 +98,7 @@ func newRegistry() *registry {
 			"mysql-legacy-database-plugin": dbMysql.New(credsutil.NoneLength, dbMysql.LegacyMetadataLen, dbMysql.LegacyUsernameLen),
 
 			"postgresql-database-plugin":    dbPostgres.New,
+			"redshift-database-plugin":      dbRedshift.New(true),
 			"mssql-database-plugin":         dbMssql.New,
 			"cassandra-database-plugin":     dbCass.New,
 			"mongodb-database-plugin":       dbMongo.New,

plugins/database/redshift/redshift-database-plugin/main.go

@@ -0,0 +1,20 @@
+package main
+
+import (
+	"log"
+	"os"
+
+	"github.com/hashicorp/vault/api"
+	"github.com/hashicorp/vault/plugins/database/redshift"
+)
+
+func main() {
+	apiClientMeta := &api.PluginAPIClientMeta{}
+	flags := apiClientMeta.FlagSet()
+	flags.Parse(os.Args[1:])
+
+	if err := redshift.Run(apiClientMeta.GetTLSConfig()); err != nil {
+		log.Println(err)
+		os.Exit(1)
+	}
+}