Test results of reading cached results in OB blocks w/o re-exeuction

Caveat: results have to be left justified if caching us used or
results are not picked up

* Output cached tables
** Left Justified
#+name: STUFF1
#+begin_src shell  :results output table :exports results :cache yes
echo a b c time
echo 1 2 3 `date +%s`
echo 4 5 6 0
#+end_src

#+RESULTS[ab9d0568e51adca45cdf65701d481a475d07b0e3]: STUFF1
| a | b | c |       time |
| 1 | 2 | 3 | 1503328650 |
| 4 | 5 | 6 |          0 |

** Not Left Justified
  #+name: STUFF2
  #+begin_src shell  :results output table :exports results :cache yes
  echo d e f time
  echo 1 2 3 `date +%s`
  echo 4 5 6 0
  #+end_src

  #+RESULTS[395dcd437c9eb11f42e463c5333797c0007f0b9a]: STUFF2
  | d | e | f |       time |
  | 1 | 2 | 3 | 1503328653 |
  | 4 | 5 | 6 |          0 |


     #+BEGIN_SRC ipython :session foo  :var stuff1=STUFF1 :exports results
stuff1
     #+END_SRC

     #+RESULTS:
     | a | b | c |       time |
     | 1 | 2 | 3 | 1503328650 |
     | 4 | 5 | 6 |          0 |


     #+BEGIN_SRC ipython :session foo  :var stuff2=STUFF2 :exports results
stuff2
     #+END_SRC

     #+RESULTS:
     : nil