Add "without_fips" mark

The "without_fips" mark disables test function when BIND 9 was built
with the FIPS mode enabled as not everything works in FIPS-enabled
builds.

bin/tests/system/isctest/mark.py

@@ -41,6 +41,10 @@ def with_tsan(*args):  # pylint: disable=unused-argument
     return feature_test("--tsan")
 
 
+without_fips = pytest.mark.skipif(
+    feature_test("--have-fips-mode"), reason="FIPS support enabled in the build"
+)
+
 have_libxml2 = pytest.mark.skipif(
     not feature_test("--have-libxml2"), reason="libxml2 support disabled in the build"
 )