Feature request: podfscp.sh should handle mounted filesystems

[kgibm]

podfscp.sh uses podfsinfo.sh to get the directory of the ephemeral filesystem of a container which is then used to download files from containers; however, this does not support directories mounted at locations within the container (e.g. persistent volumes). For example, if a WebSphere Liberty /logs/ directory is mounted on a persistent volume, then libertyperf.sh will not gather this directory (as it is empty from the point-of-view of the ephemeral filesystem).