ndb/test/include/NDBT_Table.hpp:
  Remove unused parameter
ndb/test/include/NDBT_Tables.hpp:
  Add existsOk
ndb/test/src/NDBT_Tables.cpp:
  Rename C2_* tables to I{123}
  Add indexes to I{123}
ndb/test/src/NDBT_Test.cpp:
  Rename C2_* tables to I{123}
  Add indexes to I{123}