Kerberos Proxy Auth for Netty

[dagnir]

Describe the feature

Add support for authenticating with a Proxy using Kerberos. Similar to #4767.

Use Case

Authenticating with proxy that requires Kerberos auth.

Proposed Solution

No response

Other Information

No response

Acknowledgements

• I may be able to implement this feature request
• This feature might incur a breaking change

AWS Java SDK version used

2.x

JDK version used

N/A

Operating System and version

N/A