Update linux kernel to fix cpu quota

[curantes]

RancherOS Version: (ros os version)
v1.5.5
Where are you running RancherOS? (docker-machine, AWS, GCE, baremetal, etc.)
VMware iso

There is a bug in the version of linux kernel that is in latest Rancher OS which cause cpu limits not to work as intended which faulty cpu throttling.

4.14.154 or newer of the 4.14 linux tree has this patched.

some info about this issue in a blog: https://medium.com/omio-engineering/cpu-limits-and-aggressive-throttling-in-kubernetes-c5b20bd8a718

info about patch in linux mailinglist: https://lore.kernel.org/stable/1573236387-15456-2-git-send-email-chiluk+linux@indeed.com/

github issue from kubernetes: kubernetes/kubernetes#67577

[curantes]

@niusmallnan Can you please look into updating the kernel?

[josmo]

It would be great to see the 5.6+ kernel with wireguard in the next kernel update release if that's at all in the plans.