Support trace kubernates client api in python agent

[alonelaval]

Please answer these questions before submitting your issue.

• Why do you submit this issue?
• Question or discussion
• Bug
• Requirement
• Feature or performance improvement

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Question

• What do you want to know?

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Bug

• Which version of SkyWalking, OS and JRE?

• Which company or project?

• What happened?
  If possible, provide a way to reproduce the error. e.g. demo application, component version.

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Requirement or improvement

• Please describe your requirements or improvement suggestions.

[wu-sheng]

What do you mean Support kubernates api?

[alonelaval]

What do you mean Support kubernates api?

tracing