Make CPU config of Container configurable under MoK mode

[asdf2014]

Description

In the Druid cluster with MoK mode, we can observe that the CPU usage of task Pod always touched the 100% limit, which affecting the performance of ingestion progress.

Motivation

After researched the relevant resource code, we can discovered that the CPU configuration for Container in K8s cluster has been fixed as new Quantity("1000", "m"), which is equal to one core. It would be better to make it configurable to handle various business scenarios.