[PDI-9809] [PDI-9556] [PDI-9955] [PDI-9866] [PDI-9443] [PDI-8229] Major refactor of Cassandra steps.
Merge pull request #1 from m-a-hall/master

[PDI-9809] [PDI-9556] [PDI-9955] [PDI-9866] [PDI-9443] [PDI-8229] Major refactor and improvement of Cassandra steps.