lib/oeqa/runtime/dmesg.py: whitelist dmesg message for systemd net interface name

lib/oeqa/runtime/dmesg.py: whitelist dmesg message for systemd net interface name

Messages such as:
"systemd-udevd[79]: error changing net interface name eth0 to enp0s3: Device or resource busy"
are harmless as systemd can't rename interfaces in qemu (the interface is already active).
Alternatively, passing net.ifnames=0 to the kernel will stop systemd renaming the interfaces.

(From OE-Core rev: c072fed6531f2ce3c687f8342a97f593ebf37653)

Signed-off-by: Stefan Stanacar <stefanx.stanacar@intel.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>