please add cpu and memory resource constraints

[sathyan316]

Is this a BUG REPORT or FEATURE REQUEST?: This is a feature request

What happened:

What you expected to happen: The daemon-set spec should contain cpu and memory requests and limits set for oci_monitor. Similarly the generated systemd files should also have memory and cpu constraints for portworx.service.

How to reproduce it (as minimally and precisely as possible):

Anything else we need to know?:

Environment:

• Container Orchestrator and version: Kubernetes 1.8.7

• Cloud provider or hardware configuration: VMware ESXi

• OS (e.g. from /etc/os-release): CoreOS and RHEL Atomic

• Kernel (e.g. uname -a): 4.13.9 (CoreOS) 3.10 (RHEL Atomic)

• Install tools:

• Others:

[zoxpx]

@hr1sh1kesh -- quick FYI, the PX OCI-Monitor will pass its own Kubernetes-assigned resource constraints, and automatically set it on the Portworx OCI service.

It's not done via the systemd's config, but via the OCI-spec config.json