tests, adding ignore for warnings that child did not exist in time

- this seems CI related, does not happen on local machine



git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1909568 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/test/modules/http2/env.py b/test/modules/http2/env.py
index 537d3bf..e00aef4 100644
--- a/test/modules/http2/env.py
+++ b/test/modules/http2/env.py
@@ -98,6 +98,7 @@
             'AH01247',  # mod_cgid sometimes freaks out on load tests
             'AH01110',  # error by proxy reading response
             'AH10400',  # warning that 'enablereuse' has not effect in certain configs test_h2_600
+            'AH00045',  # child did not exit in time, SIGTERM was sent
         ])
         self.httpd_error_log.add_ignored_patterns([
             re.compile(r'.*malformed header from script \'hecho.py\': Bad header: x.*'),