Consider environment variables during app.ini creation (#298)

This PR improves the handling and injection into _app.ini_ of user defined environment variables via env-to-ini script.

Fixes #297

Co-authored-by: Lucas Hahn <lucas.hahn@novum-rgi.de>
Reviewed-on: https://gitea.com/gitea/helm-chart/pulls/298
Reviewed-by: justusbunsi <justusbunsi@noreply.gitea.io>
Reviewed-by: 6543 <6543@obermui.de>

templates/gitea/statefulset.yaml

@@ -87,6 +87,9 @@ spec:
             {{- if .Values.statefulset.env }}
             {{- toYaml .Values.statefulset.env | nindent 12 }}
             {{- end }}
+            {{- if .Values.gitea.additionalConfigFromEnvs }}
+            {{- toYaml .Values.gitea.additionalConfigFromEnvs | nindent 12 }}
+            {{- end }}
           volumeMounts:
             - name: config
               mountPath: /usr/sbin