- Introduced a feature gate mechanism to `client-go`. Depending on the actual implementation, users can control features via environmental variables or command line options. ([#122555](https://github.com/kubernetes/kubernetes/pull/122555), [@p0lyn0mial](https://github.com/p0lyn0mial))

* E2E tests no longer add command line flags directly to the command line, test suites that want that need to be updated if they don't use HandleFlags ([#75593](https://github.com/kubernetes/kubernetes/pull/75593), [@pohly](https://github.com/pohly))

ryption-S3-Sealed-Key":"IAAfAOSb83gNedzpMWYJ/6uzxH1eBs0WYVvf89fvP==","X-Minio-Internal-Server-Side-Encryption-Seal-Algorithm":"DAREv2-HMAC-SHA256","content-type":"application/octet-stream"}},{"Bucket":"buck1","Name":"go_113/src/cmd/internal/objabi/line.go","UserDef":{"X-Minio-Internal-Server-Side-Encryption-Iv":"NmYqFwNI//UPoufHXAf5rJVmOJQJmx=","X-Minio-Internal-Server-Side-Encryption-S3-Kms-Key-Id":"my-minio-key","X-Minio-Internal-Server-Side-Encryption-S3-Kms-Sealed-Key":"IAAfAOWqwxPi3cMm0zn4+...

* ACTION REQUIRED: kubeadm: the mixture of "--config" and "--certificate-key" is no longer allowed. The InitConfiguration and JoinConfiguration objects now support the "certificateKey" field and this field should be used instead of the command line argument in case a configuration file is already passed. ([#78542](https://github.com/kubernetes/kubernetes/pull/78542), [@neolit123](https://github.com/neolit123))

pkg syscall (linux-arm-cgo), type Termios struct, Ispeed uint32
pkg syscall (linux-arm-cgo), type Termios struct, Lflag uint32
pkg syscall (linux-arm-cgo), type Termios struct, Line uint8
pkg syscall (linux-arm-cgo), type Termios struct, Oflag uint32
pkg syscall (linux-arm-cgo), type Termios struct, Ospeed uint32
pkg syscall (linux-arm-cgo), type Termios struct, Pad_cgo_0 [3]uint8