add s3test for sql (#5718)

* add s3test for sql

* fix test test_bucket_listv2_delimiter_basic for s3

* fix action s3tests

* regen s3 api xsd

* rm minor s3 test test_bucket_listv2_fetchowner_defaultempty

* add docs

* without xmlns

weed/s3api/s3api_xsd_generated_helper.go

@@ -0,0 +1,10 @@
+package s3api
+
+type Grantee struct {
+	XMLNS       string `xml:"xmlns:xsi,attr"`
+	XMLXSI      string `xml:"xsi:type,attr"`
+	Type        string `xml:"Type"`
+	ID          string `xml:"ID,omitempty"`
+	DisplayName string `xml:"DisplayName,omitempty"`
+	URI         string `xml:"URI,omitempty"`
+}