Add `opts ...grpc.CallOption` in grpc client (#1122)

* Add `opts ...grpc.CallOption` in grpc client

* Update format

* Update format

* Add import package

* Update format

tools/goctl/rpc/generator/gencall.go

@@ -23,7 +23,7 @@ package {{.filePackage}}
 
 import (
 	"context"
-
+	"google.golang.org/grpc"
 	{{.package}}
 
 	"github.com/tal-tech/go-zero/zrpc"
@@ -51,13 +51,13 @@ func New{{.serviceName}}(cli zrpc.Client) {{.serviceName}} {
 `
 
 	callInterfaceFunctionTemplate = `{{if .hasComment}}{{.comment}}
-{{end}}{{.method}}(ctx context.Context{{if .hasReq}},in *{{.pbRequest}}{{end}}) ({{if .notStream}}*{{.pbResponse}}, {{else}}{{.streamBody}},{{end}} error)`
+{{end}}{{.method}}(ctx context.Context{{if .hasReq}}, in *{{.pbRequest}}{{end}}, opts ...grpc.CallOption) ({{if .notStream}}*{{.pbResponse}}, {{else}}{{.streamBody}},{{end}} error)`
 
 	callFunctionTemplate = `
 {{if .hasComment}}{{.comment}}{{end}}
-func (m *default{{.serviceName}}) {{.method}}(ctx context.Context{{if .hasReq}},in *{{.pbRequest}}{{end}}) ({{if .notStream}}*{{.pbResponse}}, {{else}}{{.streamBody}},{{end}} error) {
+func (m *default{{.serviceName}}) {{.method}}(ctx context.Context{{if .hasReq}}, in *{{.pbRequest}}{{end}}, opts ...grpc.CallOption) ({{if .notStream}}*{{.pbResponse}}, {{else}}{{.streamBody}},{{end}} error) {
 	client := {{.package}}.New{{.rpcServiceName}}Client(m.cli.Conn())
-	return client.{{.method}}(ctx,{{if .hasReq}} in{{end}})
+	return client.{{.method}}(ctx{{if .hasReq}}, in{{end}}, opts...)
 }
 `
 )