This updates the network policy test that gets executed at the
conclusion of the network-policy job. As long as nsenter is used,
we need to account for situations where nsenter executing wget
fails due to invalid credentials. Since this validates the policy
successfully allows ingress traffic while still exiting with an
error code (6 for invalid credentials vs 4 for connection
timeouts), we should consider those scenarios successes.
This also updates the flags used for wget. Instead of using spider
mode, this enables flags for: recursive mode, not creating
directories, and deleting results after execution. This allows for
the testing of exporter endpoint paths explicitly.
Change-Id: I2d51e8ed5a153c2a6796e0df9b3fe5f710a947f9
a03d047e07