Correct error class in find_migrate_repo

AssertionError mustn't be used in production code. This complicates error
handling.

Change-Id: I353a2c4cd9b8bb97fffb59918f00dbbf2f326f91
list limit doc cleanup

Includes spelling corrections and whitespace cleanup.

Change-Id: I203e84b1ea199ac80a68d374e54a1825e7916aaf
Adds a fixture for setting up the cache

Certain tests will fail in isolation becasue the cache isn't properly
configured. This fixture will clear out any old configuration and
correctly configure the cache.

Change-Id: I6ec944880dea930771906a63a76400fe3d10e299
Closes-Bug: #1251300
Rename Openstack to OpenStack

Change-Id: Ib33abcae632d163a997b7213a0e97d504fc62ef7
Merge "Adds a fixture for setting up the cache"
Merge "Correct error class in find_migrate_repo"
Merge "list limit doc cleanup"
Merge "Rename Openstack to OpenStack"