72 unify configpy

The get block list is covered and checked in helper_get_blocks().

We have several methods create blocks, but the unit tests run randomly, if another one create 80 blocks first.  this check will return 80 instead of 5.  

We will have a delete block function, which is based on our cleanup/garbage collection/block file reference counter/.../... strategy.  So we haven't implement that function yet.   So each test cannot cleanup blocks at the end of it.  

I will put them back and comment out.