varnishevent: added regression test

bin/varnishevent/test/Makefile.am

-TESTS = ncsa.sh
+TESTS = regress.sh ncsa.sh

bin/varnishevent/test/regress.sh

+#!/bin/bash
+
+echo
+echo "TEST: $0"
+echo "... testing output against a known checksum"
+CMD="../varnishevent -G varnishevent.conf -r varnish.binlog"
+
+# sed removes the version/revision from the "initializing" line
+CKSUM=$( $CMD | sed -e 's/\(initializing\) \(.*\)/\1/' | cksum)
+
+if [ "$CKSUM" != '561362531 23303920' ]; then
+    echo "ERROR: Regression test incorrect cksum: $CKSUM"
+    exit 1
+fi
+
+exit 0