scapy: update to 2.4.0 and covert

convert package to python standard

Signed-off-by: Armin Kuster <akuster808@gmail.com>

recipes-security/scapy/files/run-ptest

@@ -0,0 +1,4 @@
+#!/bin/sh
+UTscapy -t regression.uts -f text -l -C \
+    -o @PTEST_PATH@/scapy_ptest_$(date +%Y%m%d-%H%M%S).log \
+    2>&1 | sed -e 's/^passed None/PASS:/' -e 's/^failed None/FAIL:/'