Reduce ingress controller replica count for test clusters

[sj-williams]

Background

Test clusters deploy with ingress controller replica count of 6, can we reduce this number and free up some resource?

Proposed user journey

N/A

Approach

Refactor components.tf for reduced ingress count for test clusters only

Which part of the user docs does this impact

N/A

Questions / Assumptions

Definition of done

• [ ] another team member has reviewed
• [ ] smoke tests are green

Reference

How to write good user stories