cut v2.2.0

[locmai]

What this PR does:

• [CHANGE] Removed config.storage.engine and any reference of it #488
• [ENHANCEMENT] Add appProtocol field to templates/svc-memberlist-headless.yaml to fix issues wirth Istio #485
• [ENHANCEMENT] Add option to autoscale on multiple metrics and custom metrics metrics #467
• [ENHANCEMENT] Add control on store-gateway statefulset when autoscale (HPA) enabled or disabled #472
• [DEPENDENCY] Update quay.io/cortexproject/cortex Docker tag to v1.15.0 #453
• [DEPENDENCY] Update quay.io/cortexproject/cortex Docker tag to v1.15.1 #456
• [DEPENDENCY] Update quay.io/cortexproject/cortex Docker tag to v1.15.2 #459
• [DEPENDENCY] Update quay.io/cortexproject/cortex Docker tag to v1.15.3 #471
• [DEPENDENCY] Update quay.io/cortexproject/cortex Docker tag to v1.16.0 #489
• [BUGFIX] Correctly interpret .Capabilities.KubeVersion when it looks like a prerelease #457
• [BUGFIX] Removed non-existent purger.enable flags in some components #488
• [BUGFIX] Fix podTargetLabels in all Prometheus ServiceMonitor CRDs #487

Checklist

• [x] CHANGELOG.md updated - the order of entries should be [CHANGE], [FEATURE], [ENHANCEMENT], [BUGFIX]

---

Hey folks, I think it's a good time to cut v2.2.0 as it's almost a year since our last release. Was thinking I could open an issue to ask for it or make a similar one like v2.1.0 which I did here.

Here are the steps I took:

• Updated Chart.yaml/CHANGELOG.md/README.md
• Ran helm package, move the compressed chart to docs directory and ran helm repo index there
• I assume the last step would be cutting the release manually with a new tag

Other notes:

• Please feel free to close/update this PR if it's not the right release process we are doing
• Do/should we have a plan for quarterly or yearly release? Just for small patches like image tag updates

[nschad]

I think you packaged the content helm package... before updating the README.md right? I'm getting sha256sum mismatch when trying to hash my archive against yours @locmai.

Can you just rerun helm package -u . again?

[locmai]

Thank you @nschad !