Http1 StreamConfig配置的max_header_size无法生效

[yejialiango]

Describe the bug

pkg/stream/http/stream.go:252
pkg/stream/http/stream.go:750
pkg/filter/network/proxy/factory.go:80

这里ok肯定是等于fasle的，因为streamConfigHandler最终是转成StreamConfig而不是map

所以无法成功设置max_header_size，这里是不是直接用parseStreamConfig取值就好了？

Expected behavior

Actual behavior

Steps to reproduce

Minimal yet complete reproducer code (or GitHub URL to code)

Environment

• MOSN Version

[doujiang24]

感谢报告，欢迎 PR~ 记得带测试用例~

[yejialiango]

ok~