release candidate 21.11-rc4

[David Marchand]

Hi all,

A new DPDK release candidate is ready for testing:
        https://git.dpdk.org/dpdk/tag/?id=v21.11-rc4

There are 46 new patches in this snapshot, for last critical fixes and
some documentation updates.

Release notes:
        https://doc.dpdk.org/guides/rel_notes/release_21_11.html

You may share some release validation results by replying to this
message at dev at dpdk.org.

DPDK 21.11 should be released at the end of this week.

Please think about sharing your roadmap now for the next release.

Thank you everyone.


-- 
David Marchand