1. Proposed title of this feature request
    HAProxy volumeMounts support
2. What is the nature and description of the request?
        Customer has tight integration with F5 to run some custom start / stop scripts and need support for volumeMounts in haproxy 
        

1. Options for adding custom volume mounts
2.    volumeMounts:
3.    - mountPath: /var/lib/haproxy/router-f5-integration
4.      name: f5-scripts-vol
5.  volumes:
6.  - name: f5-scripts-vol
7.    configMap:
8.      name: f5-scripts
9.      defaultMode: 0777

3. Why does the customer need this? (List the business requirements here)
    Customer's VOIP application needs 24 hour wait time before killing haproxy connections. This is mainly needed at the time of cluster version upgrades. Customer has lifecycle hooks preStop and postStart that achieves this via F5 integration 
    
4. List any affected packages or components.
    OpenShift HAProxy