Helm: Added topologySpreadConstraints to read deployment component (#…

…11434)

**What this PR does / why we need it**:

Add missing topologySpreadConstraints for the read deployment component.
Must have been missed in this
[PR](#11086)

Helm diff:

```console
helm diff upgrade loki ./loki -f ~/values-test.yaml -n logging --allow-unreleased
logging, loki-read, Deployment (apps) has changed:
  # Source: loki/templates/read/deployment-read.yaml
  apiVersion: apps/v1
  kind: Deployment
  .......
+       topologySpreadConstraints:
+         - labelSelector:
+             matchLabels:
+               app.kubernetes.io/component: read
+               app.kubernetes.io/instance: loki
+               app.kubernetes.io/name: loki
+           maxSkew: 1
+           nodeAffinityPolicy: Honor
+           nodeTaintsPolicy: Honor
+           topologyKey: topology.kubernetes.io/zone
+           whenUnsatisfiable: ScheduleAnyway
```

**Special notes for your reviewer**:

**Checklist**
- [x] Reviewed the
[`CONTRIBUTING.md`](https://github.com/grafana/loki/blob/main/CONTRIBUTING.md)
guide (**required**)
- [x] Documentation added
- [ ] Tests updated
- [x] `CHANGELOG.md` updated
- [ ] If the change is worth mentioning in the release notes, add
`add-to-release-notes` label
- [ ] Changes that require user attention or interaction to upgrade are
documented in `docs/sources/setup/upgrade/_index.md`
- [x] For Helm chart changes bump the Helm chart version in
`production/helm/loki/Chart.yaml` and update
`production/helm/loki/CHANGELOG.md` and
`production/helm/loki/README.md`. [Example
PR](d10549e)
- [ ] If the change is deprecating or removing a configuration option,
update the `deprecated-config.yaml` and `deleted-config.yaml` files
respectively in the `tools/deprecated-config-checker` directory.
[Example
PR](0d4416a)

---------

Co-authored-by: Michel Hollands <[email protected]>

production/helm/loki/CHANGELOG.md

@@ -13,11 +13,14 @@ Entries should include a reference to the pull request that introduced the chang
 
 [//]: # (<AUTOMATED_UPDATES_LOCATOR> : do not remove this line. This locator is used by the CI pipeline to automatically create a changelog entry for each new Loki release. Add other chart versions and respective changelog entries bellow this line.)
 
+## 5.41.1
+
+- [FEATURE] Allow topology spread constraints for Loki read deployment component.
+
 ## 5.41.0
 
 - [CHANGE] Changed version of Loki to 2.9.3
 
-
 ## 5.40.1
 
 - [BUGFIX] Remove ruler enabled condition in networkpolicies.

production/helm/loki/Chart.yaml

@@ -3,7 +3,7 @@ name: loki
 description: Helm chart for Grafana Loki in simple, scalable mode
 type: application
 appVersion: 2.9.3
-version: 5.41.0
+version: 5.41.1
 home: https://grafana.github.io/helm-charts
 sources:
   - https://github.com/grafana/loki

production/helm/loki/README.md

@@ -1,6 +1,6 @@
 # loki
 
-![Version: 5.41.0](https://img.shields.io/badge/Version-5.41.0-informational?style=flat-square) ![Type: application](https://img.shields.io/badge/Type-application-informational?style=flat-square) ![AppVersion: 2.9.3](https://img.shields.io/badge/AppVersion-2.9.3-informational?style=flat-square)
+![Version: 5.41.1](https://img.shields.io/badge/Version-5.41.1-informational?style=flat-square) ![Type: application](https://img.shields.io/badge/Type-application-informational?style=flat-square) ![AppVersion: 2.9.3](https://img.shields.io/badge/AppVersion-2.9.3-informational?style=flat-square)
 
 Helm chart for Grafana Loki in simple, scalable mode
 

production/helm/loki/templates/read/deployment-read.yaml

@@ -127,6 +127,10 @@ spec:
       nodeSelector:
         {{- toYaml . | nindent 8 }}
       {{- end }}
+      {{- with .Values.read.topologySpreadConstraints }}
+      topologySpreadConstraints:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
       {{- with .Values.read.tolerations }}
       tolerations:
         {{- toYaml . | nindent 8 }}