Add wait until bucket type visible

Adding a test to verify a bucket type is visible from a number of nodes
since the active status is given as long as the claimant sees it. But
requests to other nodes can end up hitting the dreaded {error, no_type}.
Also added a general utility that can be used for bucket type checks and
for general verification of bucket properties across nodes.

Note that some of the tests touched by this PR are currently failing for other issues. But the addition of the bucket type check should make them more robust.