61a8a9af18
The account, container, and object servers all do the same thing at the top of GET/PUT/etc.: they split the path, validate that the first two components are a good (device, partition) pair, and return a 400 if they're not. The object server already had a module-local helper function for this, but the account and container servers just had duplicate boilerplate code. Now it's all in one common helper. Change-Id: I9a20d37fc9e1a68b10149a7aa78cb9691fc04ea9