[3pwateroil][test] Add reference solution

test/porousmediumflow/3pwateroil/implicit/CMakeLists.txt

 add_input_file_links()
 
-add_dumux_test(test_box3pwateroil test_box3pwateroil test_box3pwateroil.cc "${CMAKE_CURRENT_BINARY_DIR}/test_box3pwateroil" "-TimeManager.TEnd" "43200" "-TimeManager.MaxTimeStepSize" "21600")
+add_dumux_test(test_box3pwateroil test_box3pwateroil test_box3pwateroil.cc
+               python ${CMAKE_SOURCE_DIR}/bin/testing/runtest.py
+                 --script fuzzy
+                 --files ${CMAKE_SOURCE_DIR}/test/references/3pwateroilbox-reference.vtu
+                         ${CMAKE_CURRENT_BINARY_DIR}/sagd-00011.vtu
+                 --command "${CMAKE_CURRENT_BINARY_DIR}/test_box3pwateroil")
+
 
 #install sources
 install(FILES

test/porousmediumflow/3pwateroil/implicit/test_box3pwateroil.input

 [TimeManager]
 DtInitial = 1800 # [s]
-TEnd = 18000 # [s] a year
-MaxTimeStepSize = 1800 # [s]
+TEnd = 60000 # [s]
 
 [Grid]
 UpperRight = 60 40
-Cells = 120 80
+Cells = 60 40
 
 [Problem]
 Name = sagd # name passed to the output routines