Replace hpa from v1 to v2

[zkousei]

Is your feature request related to a problem? Please describe.
We would like external metrics to be available in hpa

Describe the solution you'd like
Replace hpa in helm chart from v1 to v2.
e.g,

open-match/install/helm/open-match/templates/frontend.yaml

Line 44 in 98e7a02

apiVersion: autoscaling/v1

Also allow dynamic modification of metrics parameters in autoscaling/v2

Describe alternatives you've considered
Enable/disable hpa by value.
(When deploying a customized hpa, deploy it separately without using chart.)

Additional context
None at the moment.

[ashutosji]

Hey @zkousei, Thank you for bringing this issue to our attention. If you are willing to contribute, feel free to submit a PR and we will merge it.