chore(deps): upgrade envoy to v0.16.0

[desimone]

Summary

Updates envoy to v0.16.0 .

I don't see any breaking changes in the changelog or in my light manual testing however please do double check :)

Notable enhancements for us...

• build: enable building envoy arm64 images by buildx tool in x86 CI platform
• ext_authz filter: added support for emitting dynamic metadata for both HTTP and network filters. The emitted dynamic metadata is set by dynamic metadata field in a returned CheckResponse.
• ext_authz filter: added stat_prefix as an optional additional prefix for the statistics emitted from ext_authz HTTP filter.
• ext_authz filter: added support for letting the authorization server instruct Envoy to remove headers from the original request by setting the new field headers_to_remove before forwarding it to the upstream.
• ext_authz filter: added support for sending raw bytes as request body of a gRPC check request by setting pack_as_bytes to true.
• tls: added OCSP stapling support through the ocsp_staple and ocsp_staple_policy configuration options. See OCSP Stapling for usage and runtime flags.

Related issues

• Fixes https://github.com/pomerium/internal/issues/183
• Related to deployment: add multi-arch docker support #268

Checklist:

• add related issues
• ready for review

[codeclimate]

Code Climate has analyzed commit af45cb1 and detected 0 issues on this pull request.

View more on Code Climate.

[travisgroth]

Note - We will need to update ARM64 binary source.