[fluentd] helm chart - ability to specify nodeport manually

[butschi84]

Situation

• I like to setup fluentd on kubernetes using the helm chart so it can receive rsyslog
• In our environment, I have to setup a loadbalancer (external of the k8s cluster) which forwards traffic to my k8s cluster to a certain nodeport
• in the fluentd helm chart, there seems to be no possiblity to specify a port number for the nodeport service manually (see here)

Expectation

In the values file I like to be able to specify the nodeport manually to a specific value like so:

service:
  enabled: true
  type: "NodePort"
  ports: 
   - name: "forwarder"
     protocol: TCP
     containerPort: 24224
     nodePort: 32101