commands: list host macs: now supports displaying hostname and aliases
Revert "node.xml: add /export link to devel appliance"

This reverts commit f50b3a041e7cefb89177fa573299f4806635f88e.

Several rpms create that directory before the post section
gets executed.
So when the post section is executed the directory /export is
already there and the symbolic link is not created.