K8SPG-527 - Fix pg-db cluster.yaml resources placeholder syntax error

[TAbhay]

While installing the pg-db cluster using helm, instance was not able to allocation resources.

Error: client.go:134: [debug] creating 2 resource(s) error: installation failed: 1 error occurred: * perconapgcluster.pgv2.percona.com "pg-db" is invalid: [spec.instances[0].resources.limits.cpu: invalid value: "$instance.resourc": spec.instances[0].resources.limits.cpu in body should match '^(\+|-)?(([0-9]+(\.[0-9])?)|(\.[0-9]+))(([kmgtpe]i)|[numkmgtpe]|([ee](\+|.[0-9])?)|(\.[0-9]+))))?$', spec.instances[0].resources.limits.memory: invalid value: "$instance.resources.limits.memory": spec.instances.limits.memory in body should match '^(\+|-)?(([0-9]+(\.[0-9])?)|(\.[0-9]+))(([kmgtpe]i)|[numkmgtpe]|([ee](\+|-)?(([0-9]+(\.[0-9])?)|(\., spec.backups.pgbackrest.repos: required value]

Reason: Placeholder syntax error in cluster.yaml of pg-db/charts/templates/cluster.yaml

Here, I have attached the screenshots for issue & fix. Issue: Fix:

[it-percona-cla]

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[TAbhay]

@tplavcic Please review it. Thank you 🙂

[tplavcic]

@TAbhay Thank you very much for the contribution! It is now merged.