Lost ipdevpoll database connections aren't properly reset under Django 1.7

[Morten Brekkevold]

A slew of OS upgrades have made it obvious that ipdevpoll under NAV 4.4 isn't resetting lost database connections like it used to. It just keeps logging InterfaceErrors into infinity.

Upon inspection, it seems the problem is becase Django 1.7 is wrapping the database exceptions raised by the psycogp2 driver, so the reset handler is now catching the wrong exceptions.

It should be made to catch InterfaceErrors and OperationalErrors from both psycopg2 and Django.

[Morten Brekkevold (mbrekkevold)]

fix here: https://nav.uninett.no/hg/default/rev/ea688c9989d1