Add ability to add volumes and volumemounts to daemonset

[MWyssy]

Would it be possible to add the ability to add volumes and volumeMounts to the daemonset through values? The reason for this is that, for my use case, I need to add ssl certificates to the root of any pods that need access outside of the cluster due to a security proxy that is in place. My current workaround is to template the helm chart and add the volume/mount manually, but this obviously makes updating and maintaining kube2iam slightly more difficult as it isn't deployed directly through Helm.