feat: service.{http,ssh}.loadBalancerClass (#640)

### Description of the change

Introduce `service.{http,ssh}.loadBalancerClass`

### Benefits

Feature was not supported before. This is required if your cluster has multiple loadBalancer options and you want to select one

### Possible drawbacks

More yaml.

### Checklist

- [x] Parameters are documented in the `values.yaml` and added to the `README.md` using [readme-generator-for-helm](https://github.com/bitnami-labs/readme-generator-for-helm)
- [x] Templating unittests are added

Reviewed-on: https://gitea.com/gitea/helm-chart/pulls/640
Reviewed-by: pat-s <pat-s@noreply.gitea.com>
Co-authored-by: Karitham <kar@karitham.dev>
Co-committed-by: Karitham <kar@karitham.dev>

templates/gitea/http-svc.yaml

@@ -11,7 +11,11 @@ metadata:
     {{- toYaml .Values.service.http.annotations | nindent 4 }}
 spec:
   type: {{ .Values.service.http.type }}
-  {{- if and .Values.service.http.loadBalancerIP (eq .Values.service.http.type "LoadBalancer") }}
+  {{- if eq .Values.service.http.type "LoadBalancer" }}
+  {{- if .Values.service.http.loadBalancerClass }}
+  loadBalancerClass: {{ .Values.service.http.loadBalancerClass }}
+  {{- end }}
+  {{- if and .Values.service.http.loadBalancerIP }}
   loadBalancerIP: {{ .Values.service.http.loadBalancerIP  }}
   {{- end }}
   {{- if .Values.service.http.loadBalancerSourceRanges }}
@@ -20,6 +24,7 @@ spec:
     - {{ . }}
   {{- end }}
   {{- end }}
+  {{- end }}
   {{- if .Values.service.http.externalIPs }}
   externalIPs:
     {{- toYaml .Values.service.http.externalIPs | nindent 4 }}

templates/gitea/ssh-svc.yaml

@@ -12,6 +12,9 @@ metadata:
 spec:
   type: {{ .Values.service.ssh.type }}
   {{- if eq .Values.service.ssh.type "LoadBalancer" }}
+  {{- if .Values.service.ssh.loadBalancerClass }}
+  loadBalancerClass: {{ .Values.service.ssh.loadBalancerClass }}
+  {{- end }}
   {{- if .Values.service.ssh.loadBalancerIP }}
   loadBalancerIP: {{ .Values.service.ssh.loadBalancerIP }}
   {{- end -}}