For all those of you wondering.
I found the Solution.
One caveat, the endpoint has to be in the same namespace as the pod Consuming it.

1. Create a Service for Gluster

   ---
   apiVersion: v1
   kind: Service
   metadata:
   name: glusterfs-cluster
   namespace: global-storage
   spec:
   ports:
   - port: 1
   

2. Create endpoint for your Service

   ---
   apiVersion: v1
   kind: Endpoints
   metadata:
   name: glusterfs-cluster
   namespace: default
   subsets:
   - addresses:
     - ip: 10.135.112.37
   ports:
     - port: 1
   - addresses:
     - ip: 10.135.53.65
   ports:
     - port: 1
   - addresses:
     - ip: 10.135.26.91
   ports:
     - port: 1
   

3. Consume Shared Volume

   ---
   apiVersion: apps/v1
   kind: Deployment
   metadata:
   name: nginx-deployment
   namespace: default
   labels:
   app: nginx
   spec:
   replicas: 1
   selector:
   matchLabels:
     app: nginx
   template:
   metadata:
     labels:
       app: nginx
   spec:
     containers:
     - name: nginx
       image: nginx:1.15.4
       ports:
       - containerPort: 80
       volumeMounts:
       - mountPath: /usr/share/nginx/html
         name: nfs-vol
       - mountPath: /data
         name: glusterfsvol
     volumes:
     - name: nfs-vol
       nfs:
         server: glusterfs.cloud.integral-systems.ch
         path: /globalshare
     - name: glusterfsvol
       glusterfs:
         endpoints: glusterfs-cluster
         path: globalshare
         readOnly: false
   

Hope this helps :)