Standardize Labels (name:value pair) & Replica to align with other charts

[renmak]

Is this a bug report or feature request? (choose one): Mixed; depends on perspective

Kubernetes Version (output of kubectl version): N/A

Helm Client and Tiller Versions (output of helm version): N/A

Development or Deployment Environment?: N/A

Release Tag or Master:

Expected Behavior:
As a developer and operator, it would be desirable to have standardized value.yaml in all charts.

Nova and Neutron are considered as a sample standard helm chart.

In following charts, Labels needs to be separated (just like replicas) to achieve parity with Nova & Neutron
Cinder, Ceph, Glance, Heat

What Actually Happened: This is what we have today in Cinder value.yaml

replicas:
  api: 1
  volume: 1
  scheduler: 1

labels:
  node_selector_key: openstack-control-plane
  node_selector_value: enabled

How to Reproduce the Issue (as minimally as possible):

Any Additional Comments: @v1k0d3n @alanmeadows

[renmak]

Created this new issue to track pending standardizing work.

Following are previous issues related to this issue
#267
#207

[wilkers-steve]

@renmak Thanks for tracking your work and thinking about services outside of what you've tackled in nova. In regards to standardizing our charts, I think nova and neutron were the only two that needed special consideration. That need arose out of both services having some components that run on the control plane and some components that run on the compute nodes.

I don't think we should define a label for each component in the rest of the services as they'll all run in the control plane. I'd like @alanmeadows feedback on this, but I think nova and neutron should be the only two that needed attention.