blocked cpus for scheduling and cpu pinning

[lukas016]

Summary

We need option for exclude some physical cpu cores from scheduling and cpu pinning.
Main reason is minimize side effects to other apps which can use cpu pinning too (dp-service).
We can inspire by virtlet.

Feature has to be compatible with overcommit vcpu: #167
and numa pining: #48
It will have higher priority in logic as overcommit vcpu. It means: we have to decrease blocked cpu first from count of total physical cores and after we can apply overcommit vcpu logic.
Blocked cpus cannot be used for pinning.

This feature has to be optional and it can be configurable with argument.

Basic example

Don't use 0 and 1 cores for VMs
--resource-manager-blocked-cpus=0,1

Motivation

Minimize side effects to other apps. Improve performance.

Related issues

• Blocked by:
  • Support NUMA Domain Pinning and Usage of Hugepages #48