DBPW - Enables AutoMTLS for DB plugins (#10220)

This also temporarily disables couchbase, elasticsearch, and
mongodbatlas because the `Serve` function needs to change signatures
and those plugins are vendored in from external repos, causing problems
when building.

sdk/database/dbplugin/v5/plugin_client.go

@@ -45,6 +45,7 @@ func NewPluginClient(ctx context.Context, sys pluginutil.RunnerUtil, pluginRunne
 		pluginutil.HandshakeConfig(handshakeConfig),
 		pluginutil.Logger(logger),
 		pluginutil.MetadataMode(isMetadataMode),
+		pluginutil.AutoMTLS(true),
 	)
 	if err != nil {
 		return nil, err

sdk/database/dbplugin/v5/plugin_server.go

@@ -1,7 +1,6 @@
 package dbplugin
 
 import (
-	"crypto/tls"
 	"fmt"
 
 	"github.com/hashicorp/go-plugin"
@@ -11,11 +10,11 @@ import (
 // Serve is called from within a plugin and wraps the provided
 // Database implementation in a databasePluginRPCServer object and starts a
 // RPC server.
-func Serve(db Database, tlsProvider func() (*tls.Config, error)) {
-	plugin.Serve(ServeConfig(db, tlsProvider))
+func Serve(db Database) {
+	plugin.Serve(ServeConfig(db))
 }
 
-func ServeConfig(db Database, tlsProvider func() (*tls.Config, error)) *plugin.ServeConfig {
+func ServeConfig(db Database) *plugin.ServeConfig {
 	err := pluginutil.OptionallyEnableMlock()
 	if err != nil {
 		fmt.Println(err)
@@ -35,7 +34,6 @@ func ServeConfig(db Database, tlsProvider func() (*tls.Config, error)) *plugin.S
 		HandshakeConfig:  handshakeConfig,
 		VersionedPlugins: pluginSets,
 		GRPCServer:       plugin.DefaultGRPCServer,
-		TLSProvider:      tlsProvider,
 	}
 
 	return conf