Support pg10
Support pg10

One test appears to use some awkward calling style
with the current_date function that isn't working in pg10
anymore, this looks like an extremely
old test that can be removed

Change-Id: I5f8aee0f5ed423461be5a9060c812eb0acdc7df5

monetate/sqlalchemy,sqlalchemy/sqlalchemy,zzzeek/sqlalchemy,wujuguang/sqlalchemy,graingert/sqlalchemy,graingert/sqlalchemy,j5int/sqlalchemy,j5int/sqlalchemy,monetate/sqlalchemy,wujuguang/sqlalchemy