kernel/v5.15: Enable CONFIG_SECURITY_CONTAINER_MONITOR for 5.15 kernel.

BUG=b/234891442
TEST=presubmit, validation
RELEASE_NOTE=None

Signed-off-by: Meena Shanmugam<meenashanmugam@google.com>

Change-Id: I79377ee7b89a05a906ae70bc154b51d6f9f796b6
Reviewed-on: https://cos-review.googlesource.com/c/third_party/kernel/+/34360
Reviewed-by: Ken Hofsass <hofsass@google.com>
Reviewed-by: Oleksandr Tymoshenko <ovt@google.com>
Tested-by: Cusky Presubmit Bot <presubmit@cos-infra-prod.iam.gserviceaccount.com>