Add option to set apiServer extraVolumes (#35)

### PR Description
Add option to set `apiServer.extraVolumes`.

### Checklist

- [x] Have you reviewed and updated the chart default values if
necessary?
- [x] Have you reviewed and updated the chart documentation if
necessary?
- [ ] Does your branch follow the naming convention of
`{chartNameWithDashes}-v{versionString}-{optionalPatchVersion}`?
 - [x] Have you bumped the version in the chart's `Chart.yaml`?

### Tagged Releases
Please remember to make a tagged release after merging your PR that:

 - Has a tag name that matches your PR branch name (see above)
 - Has a description that summarizes the changes made

This makes it possible to use previous versions of the charts maintained
here as new releases are published. Please see the release history of
this repository for examples.

Signed-off-by: Igor Valente Blackman <[email protected]>

charts/clusterapi-resources/Chart.yaml

@@ -17,7 +17,7 @@ type: application
 # This is the chart version. This version number should be incremented each time you make changes
 # to the chart and its templates, including the app version.
 # Versions are expected to follow Semantic Versioning (https://semver.org/)
-version: 0.2.0
+version: 0.3.0
 
 # This is the version of clusterctl used as base to generate the templates
 appVersion: "1.8.3"

charts/clusterapi-resources/templates/KubeadmControlPlane.yaml

@@ -13,6 +13,10 @@ spec:
         {{- with .Values.kubeadmConfigSpec.apiServer.extraArgs }}
           {{- toYaml . | nindent 10 }}
         {{- end }}
+        {{- with .Values.kubeadmConfigSpec.apiServer.extraVolumes }}
+        extraVolumes:
+          {{- toYaml . | nindent 10 }}
+        {{- end }}
       controllerManager:
         extraArgs:
           cloud-provider: external

charts/clusterapi-resources/values.yaml

@@ -71,6 +71,16 @@ kubeadmConfigSpec:
     extraArgs: {}
       # extra1: value1
       # extra2: value2
+    extraVolumes: {}
+    # - hostPath: /etc/kubernetes/tokens
+    #   mountPath: /etc/kubernetes/tokens
+    #   name: token-auth-config
+    # - hostPath: /etc/kubernetes/audit-policy
+    #   mountPath: /etc/kubernetes/audit-policy
+    #   name: audit-policy
+    # - hostPath: /var/log/kube-audit
+    #   mountPath: /var/log/audit
+    #   name: audit-logs
   ## Extra args for kubeadm controllerManager
   controllerManager:
     extraArgs: {}