move bulk of the Hazelcast code into HazelcastService from CNodeService so that it is centrall located - easier to manage and configure
verify that the sysmeta checksum value matches the computed checksum value when calling create()https://redmine.dataone.org/issues/1795
include sysmeta for uploaded BIN data that comes through the legacy Metacat servlet API
check for null pointers when adding system metadata/creating records during cn.create()
removing unneeded class (never used)
cleaned up mock tests on hzObjectPathMap. split out code for mocking a datastore into MockObjectPathMap.
initialize Hazelcast from the custom configuration when initializing the Metacat service.
handle entryAdded and entryUpdated the same - update the entry if it exists, otherwise create it
handle entryAdded (to hzSystemMetadata) to store sysmeta to local store when it is not already present
make isScienceMetadata() method public/static to be called throughout Metacat
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