Ensure that pods coming from the unit test configuration validate,
and that proper names are generated.
Lowercases source filenames, strips all but a-z0-9, and tests
for consistent results.
The next index to watch should always be current+1 if we got a
response from etcd, but otherwise it should always be current.
Moved the increment into fetchNextState which returns the next
index to watch for (or the same if an error occurs)
