Add test config boilerplate to linux-egl config

This prevents obscure python errors

b/323963204

starboard/linux/x64x11/egl/cobalt/configuration.py

@@ -0,0 +1,32 @@
+# Copyright 2024 The Cobalt Authors. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+"""Starboard Linux x64x11 Egl Cobalt configuration."""
+
+from starboard.linux.shared.cobalt import configuration as shared_configuration
+from starboard.tools.testing import test_filter
+
+
+class CobaltLinuxX64X11EglConfiguration(
+    shared_configuration.CobaltLinuxConfiguration):
+  """Starboard Linux x64x11 Egl Cobalt configuration."""
+
+  def GetTestFilters(self):
+    filters = super(CobaltLinuxX64X11EglConfiguration, self).GetTestFilters()
+    for target, tests in self.__FILTERED_TESTS.items():
+      filters.extend(test_filter.TestFilter(target, test) for test in tests)
+    return filters
+
+  # A map of failing or crashing tests per target.
+  __FILTERED_TESTS = {  # pylint: disable=invalid-name
+  }