Update simple test for PartHoleDrudge
Update simple test for PartHoleDrudge

Due to the Spark mock library, we do not need tests concentrating on no
parallelization any more.  Now this test is updated to test the simple
normal-ordering of particle-hole drudge.  Also, this tests the Einstein
summation convention on particle-hole problems.

tschijnmo/drudge,tschijnmo/drudge,tschijnmo/drudge