General btest cleanup

- Use `-b` most everywhere, it will save time.

- Start some intel tests upon the input file being fully read instead of
  at an arbitrary time.

- Improve termination condition for some sumstats/cluster tests.

- Filter uninteresting output from some supervisor tests.

- Test for `notice_policy.log` is no longer needed.

testing/btest/scripts/base/frameworks/logging/ascii-escape-odd-url.zeek

@@ -1,4 +1,4 @@
 #
-# @TEST-EXEC: zeek -C -r $TRACES/www-odd-url.trace
+# @TEST-EXEC: zeek -b -C -r $TRACES/www-odd-url.trace base/protocols/http
 # @TEST-EXEC: btest-diff http.log