Qdrant: fix invalid field

[camdencheek]

Apparently strategy is not a valid field for StatefulSet (only Deployment). I caught this when trying to port the rendered helm template to the dotcom deployment, which uses kubectl apply rather than helm upgrade. kubectl apply returns a validation error for that field.

This fixes strategy and two other invalid fields which are ignored with helm, but get caught by the kubectl apply validator.

Checklist

• Follow the manual testing process
• Update changelog

Test plan

Ran the cluster locally, inspected the running service to ensure it had an update strategy of RollingUpdate