Adding annotations support for statefulset-read.yaml (#11690)

Adding fixing lake of annotations support for `read` StatefulSet

**What this PR does / why we need it**:
Currently there is no use for `read.annotations` at the
`statefulset-read.yaml` file.
The key exists on `values.yaml` file, with no use.

**Which issue(s) this PR fixes**:
Fixes #11688 

**Special notes for your reviewer**:

**Checklist**
- [x] Reviewed the
[`CONTRIBUTING.md`](https://github.com/grafana/loki/blob/main/CONTRIBUTING.md)
guide (**required**)
- [ ] Documentation added
- [ ] Tests updated
- [ ] `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

@@ -13,6 +13,10 @@ 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.)
 
+## 5.42.1
+
+- [BUGFIX] Added missing annotations to loki-read StatefulSet.
+
 ## 5.42.0
 
 - [CHANGE] Changed versions of Loki v2.9.4 and GEL v1.8.6

production/helm/loki/Chart.yaml

@@ -3,7 +3,7 @@ name: loki
 description: Helm chart for Grafana Loki in simple, scalable mode
 type: application
 appVersion: 2.9.4
-version: 5.42.0
+version: 5.42.1
 home: https://grafana.github.io/helm-charts
 sources:
   - https://github.com/grafana/loki

production/helm/loki/README.md

@@ -1,6 +1,6 @@
 # loki
 
-![Version: 5.42.0](https://img.shields.io/badge/Version-5.42.0-informational?style=flat-square) ![Type: application](https://img.shields.io/badge/Type-application-informational?style=flat-square) ![AppVersion: 2.9.4](https://img.shields.io/badge/AppVersion-2.9.4-informational?style=flat-square)
+![Version: 5.42.1](https://img.shields.io/badge/Version-5.42.1-informational?style=flat-square) ![Type: application](https://img.shields.io/badge/Type-application-informational?style=flat-square) ![AppVersion: 2.9.4](https://img.shields.io/badge/AppVersion-2.9.4-informational?style=flat-square)
 
 Helm chart for Grafana Loki in simple, scalable mode
 

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

@@ -9,6 +9,15 @@ metadata:
   labels:
     app.kubernetes.io/part-of: memberlist
     {{- include "loki.readLabels" . | nindent 4 }}
+  {{- if or (not (empty .Values.loki.annotations)) (not (empty .Values.read.annotations))}}
+  annotations:
+    {{- with .Values.loki.annotations }}
+    {{- toYaml . | nindent 4 }}
+    {{- end }}
+    {{- with .Values.read.annotations }}
+    {{- toYaml . | nindent 4 }}
+    {{- end }}
+  {{- end }}
 spec:
 {{- if not .Values.read.autoscaling.enabled }}
   replicas: {{ .Values.read.replicas }}