Prevent symlinks to be added to the tree
Prevent symlinks to be added to the tree

Symlinks cannot be allowed because they are not supported by distutils.
Adding them results into package build failures.

This patch add a check that verifies that no symlinks can slip in.

Closes-bug: #1404605

Change-Id: I0d308127081bb2fa4ff7d7e0ed2f1b6e915163c9

moshele/old-networking-mlnx