Add a parallel table mutation example

A new simple example that is pretty easy to follow that does
a embarrassingly parallel computation on some input table to
create a new output table (by performing a multiplication on
each cell in that source table to create a new table).

Part of blueprint more-examples

Change-Id: I2684f39b3525ee2d43a03ab353d029fdc0e1b2a1
Merge "Add a parallel table mutation example"