[bitnami/fluentd] Add possibility to mount extra volumes (#2581)

* Add possibility to mount extra volumes in aggregators

Signed-off-by: Ivan Rizzante <ivan.rizzante@tech.sdb.it>

* Bump chart version

Signed-off-by: Ivan Rizzante <ivan.rizzante@tech.sdb.it>

* Update readme

Signed-off-by: Ivan Rizzante <ivan.rizzante@tech.sdb.it>

* Fix typo error

Signed-off-by: Ivan Rizzante <ivan.rizzante@tech.sdb.it>

* Update README.md

* [bitnami/fluentd] Update components versions

Signed-off-by: Bitnami Containers <containers@bitnami.com>

Co-authored-by: Ivan Rizzante <ivan.rizzante@tech.sdb.it>
Co-authored-by: Carlos Rodríguez Hernández <carlosrh@vmware.com>
Co-authored-by: Bitnami Containers <containers@bitnami.com>

bitnami/fluentd/values.yaml

@@ -13,7 +13,7 @@ global: {}
 image:
   registry: docker.io
   repository: bitnami/fluentd
-  tag: 1.10.4-debian-10-r0
+  tag: 1.10.4-debian-10-r2
   ## Specify a imagePullPolicy
   ## Defaults to 'Always' if image tag is 'latest', else set to 'IfNotPresent'
   ## ref: http://kubernetes.io/docs/user-guide/images/#pre-pulling-images
@@ -211,6 +211,17 @@ forwarder:
   
   ## Extra labels to add to Pod
   podLabels: {}
+  
+  ## Extra volumes to mount
+  ## Example Use Case: mount systemd journal volume
+  # extraVolumes:
+  #   - name: systemd
+  #       hostPath:
+  #         path: /run/log/journal/
+  #
+  # extraVolumeMounts:
+  #   - name: systemd
+  #     mountPath: /run/log/journal/
 
 ## Agregator parameters
 ##