All of ActiveStorage database modeltable nameshave been hard coded.
Therefore, ActiveRecord::Base.(prefix|suffix) were not taken into
consideration. To fix this we remove the hard coded lines. But then we
need to also override an internal method for specifying the prefix
because of a mystical ActiveRecord/ActiveStorage sync issue
(Suffix does not appear to have the issue)

Some tests were refactored to remove hard coded table name references,
making ActiveStorage test suite compatible with ActiveRecord config.