RPM Support

From bugzilla:

On updating a repo without touching checksum_type attribute, pulp raises an unexpected KeyError:

Jul 15 10:50:32 rhsm-qe-3 pulp: celery.worker.job:ERROR: (4746-12352) Task pulp.server.tasks.repository.distributor_update[36edf787-70ca-437a-b840-a3aebba3fd4e] raised unexpected: KeyError(u'checksum_type',)
Jul 15 10:50:32 rhsm-qe-3 pulp: celery.worker.job:ERROR: (4746-12352) Traceback (most recent call last):
Jul 15 10:50:32 rhsm-qe-3 pulp: celery.worker.job:ERROR: (4746-12352)   File "/usr/lib/python2.7/site-packages/celery/app/trace.py", line 240, in trace_task
Jul 15 10:50:32 rhsm-qe-3 pulp: celery.worker.job:ERROR: (4746-12352)     R = retval = fun(*args, **kwargs)
Jul 15 10:50:32 rhsm-qe-3 pulp: celery.worker.job:ERROR: (4746-12352)   File "/usr/lib/python2.7/site-packages/pulp/server/async/tasks.py", line 473, in __call__
Jul 15 10:50:32 rhsm-qe-3 pulp: celery.worker.job:ERROR: (4746-12352)     return super(Task, self).__call__(*args, **kwargs)
Jul 15 10:50:32 rhsm-qe-3 pulp: celery.worker.job:ERROR: (4746-12352)   File "/usr/lib/python2.7/site-packages/pulp/server/async/tasks.py", line 103, in __call__
Jul 15 10:50:32 rhsm-qe-3 pulp: celery.worker.job:ERROR: (4746-12352)     return super(PulpTask, self).__call__(*args, **kwargs)
Jul 15 10:50:32 rhsm-qe-3 pulp: celery.worker.job:ERROR: (4746-12352)   File "/usr/lib/python2.7/site-packages/celery/app/trace.py", line 437, in __protected_call__
Jul 15 10:50:32 rhsm-qe-3 pulp: celery.worker.job:ERROR: (4746-12352)     return self.run(*args, **kwargs)
Jul 15 10:50:32 rhsm-qe-3 pulp: celery.worker.job:ERROR: (4746-12352)   File "/usr/lib/python2.7/site-packages/pulp/server/controllers/distributor.py", line 211, in update
Jul 15 10:50:32 rhsm-qe-3 pulp: celery.worker.job:ERROR: (4746-12352)     distributor.config.pop(k)
Jul 15 10:50:32 rhsm-qe-3 pulp: celery.worker.job:ERROR: (4746-12352)   File "/usr/lib/python2.7/site-packages/mongoengine/base/datastructures.py", line 73, in pop
Jul 15 10:50:32 rhsm-qe-3 pulp: celery.worker.job:ERROR: (4746-12352)     return super(BaseDict, self).pop(*args, **kwargs)
Jul 15 10:50:32 rhsm-qe-3 pulp: celery.worker.job:ERROR: (4746-12352) KeyError: u'checksum_type'

Things seem to go wrong here: https://github.com/pulp/pulp/blob/2.8-dev/server/pulp/server/controllers/distributor.py#L211