can't use opentelemetry tracer

[JhouXerox]

If you are reporting any crash or any potential security issue, do not open an issue in this repo. Please report the issue via ASRC(Alibaba Security Response Center) where the issue will be triaged appropriately.

• [x] I have searched the issues of this repository and believe that this is not a duplicate.

Ⅰ. Issue Description

when using opentelemetry tracer, x-b3-sampled will not be 1.

Ⅱ. Describe what happened

Ⅲ. Describe what you expected to happen

it should be described in configmap through tracing.sampling

Ⅳ. How to reproduce it (as minimally and precisely as possible)

1. config tracer as opentelemetry
2. make a ingress
3. postman it

Ⅴ. Anything else we need to know?

Ⅵ. Environment:

• Higress version:
• OS :
• Others:

[johnlanni]

We will support this feature in June.