Revert "Merge pull request #22 from chrrrles/asm1469"

This reverts commit 6f2549a9b9d6d3d0fe25b22dbd992663dd87c644, reversing
changes made to e48fc24168f83593391be9bdcedabc58c23cb6ab.

RHEL / CentOS installs do not seem to have native support for mounting
NFS shares. They require the nfs-utils rpm which is not installed by
default even on the full ISO images.