added hostpath volumes

[wenbenz]

Description of the change

Add parameter for creating a PV for an existing data directory

Benefits

Enable users to mount existing data directory.

Possible drawbacks

None.

Applicable issues

• fixes Feature: Allow to mount custom volume for data #798

Additional information

Checklist

• I have read the CONTRIBUTING.md doc.
• DCO has been signed off on the commit.
• Chart version bumped in Chart.yaml according to semver.
• (optional) Parameters are documented in the README.md

[wrenix]

If we want to support hostPath im this helm-chart, i would prefer a different solution:

• drop pvc if hostPath is set
• change in deployment the volume from pvc to hostPath: https://thelinuxcode.com/kubernetes-hostpath-volumes/

[wenbenz]

What if there's a cluster with >1 node? Wouldn't we want the PVC with a hostPath PV so they read the same data?

[wrenix]

nodeSelector:

helm/charts/nextcloud/templates/deployment.yaml

Line 281 in 7edffec

nodeSelector:

OR

affinity:

helm/charts/nextcloud/templates/deployment.yaml

Lines 339 to 341 in 7edffec

	{{- with .Values.affinity }}
	affinity:
	{{- toYaml . | nindent 8 }}

[wenbenz]

Does this look good?