Add a test for the VPIC reader

Thanks Vadim Roytershtey and Homa Karimabadi for the test data set.
Test only enabled with VTK_USE_LARGE_DATA = ON

Change-Id: Ic04681dbffcc57ed27377ca5f3cae015249a7308
Merge topic 'test-vpic-reader' into master

274c07be Add a test for the VPIC reader