Update search tests to use count if total not provided in bundle

[gabcbrown]

As mentioned in #140 , the total field of a bundle can be provided in search results but is not required. This PR updates the Search and Sprinkler Search test suites to use a count of the resources in the bundle if no total is provided, just as #159 updated the History test suites. It was also mentioned in the discussion of PR 159 that pagination is required to get an accurate count, but since the tests in question aren't querying large numbers of resources this is reasonably left to further implementation.

[gabcbrown]

@arscan let me know if there's anything else I can do to make this PR ready. I have a few other things I'd like to contribute too.

[gabcbrown]

Hi @arscan, @jawalonoski, please let me know if this project is being actively maintained. I have been using Crucible extensively, and I think there's a lot of great work here! I am finding bugs in the plan_executor, especially around generating resources and R3<=>R4 differences, that I would like to help fix.