Add affinity and tolerations to the CNI Metrics Helper deployment template

[oplat-softserve]

Is your feature request related to a problem?
I cannot deploy a chi-metrics-helper to a specific node group by defining a tolerations and affinity parameters

Is your feature request related to a specific Helm chart, if yes mention name of the chart?
cni-metrics-helper

Describe the solution you'd like
add 'affinity' and 'tolerations' parameters to the deployment template file

Describe alternatives you've considered
N/A