add affinity to helm charts

[bschreder]

add affinity to helm charts top support nodeAffinity, podAffinity, and podAntiAffinity

Description

Added global and component/browser affinity selectors to the helm charts. The global setting, as suggested per issue #1763, affects all components. Additional, individual components can set their affinity and will override the global settings.
Affinity information is available at https://kubernetes.io/docs/concepts/scheduling-eviction/assign-pod-node/

Additional, I updated tolerations to remove the blank line

Motivation and Context

It allows tests to run across multiple nodepools with preference toward the lower cost nodepools.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• [x ] New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist

• [x ] I have read the contributing document.
• [x ] My change requires a change to the documentation.
• [x ] I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.

[CLAassistant]

All committers have signed the CLA.

[diemol]

Thank you, @bschreder!