Support reflecting no inherit check constraint in pg.
Added support for reflection of PostgreSQL CHECK constraints marked with
"NO INHERIT", setting the key ``no_inherit=True`` in the reflected data.
Pull request courtesy Ellis Valentiner.
Fixes: #10777
Closes: #10778
Pull-request: https://github.com/sqlalchemy/sqlalchemy/pull/10778
Pull-request-sha:
058082ff6297f9ccdc4977e65ef024e9a093426e
Change-Id: Ia33e29c0c57cf0076e8819311f4628d712fdc332
(cherry picked from commit
890b84e1693ce702ef0e20046cadc6e741274013)