Reruns TestBulkLoadHFilesSplitRecovery using BulkLoadHFiles in secure mode.
This suite is unable to verify the security handoff/turnove as miniCluster is running as system
user thus has root privileges and delegation tokens don't seem to work on miniDFS.
Thus SecureBulkload can only be completely verified by running integration tests against a secure
cluster. This suite is still invaluable as it verifies the other mechanisms that need to be
supported as part of a LoadIncrementalFiles call.