Audio VTS: remove expectation of policy configuration unicity

    const char* possibleConfigLocations[] = {"/odm/etc", "/vendor/etc", "/system/etc"};

    const char* configSchemaPath = "/data/local/tmp/audio_policy_configuration.xsd";

    bool found = false;

    for (std::string folder : possibleConfigLocations) {

        const auto configPath = folder + '/' + configName;

        if (access(configPath.c_str(), R_OK) == 0) {

            ASSERT_FALSE(found) << "Multiple " << configName << " found in "

                                << ::testing::PrintToString(possibleConfigLocations);

            found = true;

            ASSERT_VALID_XML(configPath.c_str(), configSchemaPath);

        }

    }