Add workaround for verifier failure

Resolves: https://www.pivotaltracker.com/story/show/77197212
Added methods testDeleteNodeType and testDeleteNodeTypeInvalid to FedoraStoragePolicyTest
Merge pull request #441 from giuliah/fcrepo-FedoraStoragePolicyTest

Added methods testDeleteNodeType and testDeleteNodeTypeInvalid to Fedora...
Make baseURLSet static to avoid running baseURL code with each request

- Add support for enabling many object creation IT with a sytem property, disabled by default

Resolves: https://www.pivotaltracker.com/story/show/77492702