Use linters when testing.

ament_lint_auto and ament_lint_common are both already dependencies
listed in this package but they were not yet enabled.

With these linters enabled there are a number of failures.

rcl_logging_log4cxx/CMakeLists.txt

@@ -46,6 +46,11 @@ ament_target_dependencies(${PROJECT_NAME}
 
 target_compile_definitions(${PROJECT_NAME} PRIVATE "RCL_LOGGING_BUILDING_DLL")
 
+if (BUILD_TESTING)
+  find_package(ament_lint_auto REQUIRED)
+  ament_lint_auto_find_test_dependencies()
+endif()
+
 install(TARGETS ${PROJECT_NAME}
   ARCHIVE DESTINATION lib
   LIBRARY DESTINATION lib