Cassandra 12937 instaclustr

[Claudenw]

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The Cassandra Jira

[Claudenw]

@smiklosovic I think this change solves some of the problems with determining the system keyspaces.

Basically everyplace we call CompressionParams.defaultParams() we know the keyspace. So just pass it and make all the system keyspace resolution code for CompressionParams in the defaultParams call. Keep it in one place so we only have one place to look for changes.

[Claudenw]

Removed some unintentional changes.

[Claudenw]

@smiklosovic Do you think you want to proceed with this? I think we can make this work cleanly and efficiently fairly quickly

[Claudenw]

@smiklosovic , Do you think you can merge this pull into your branch so we can update the master pull request for 12937. I would like to see this get in soon.