[QTL] Immediate future plans

[drcrallen]

Here is a general overview of the QTL related items (kind of like an epic)

1. [QTL] Move kafka-extraction-namespace to the Lookup framework. #2800 needs merged as soon as possible to take the kafka extension off the table for other discussions for the time being.
2. [QTL] Make URI Exctraction Namespace take more sane arguments #2738 is independent of the other 0.9.1 QTL changes, but may have (minor) merge conflicts with the other QTL changes.
3. [QTL] Implement LookupExtractorFactory of namespaced lookup #2716 --> [QTL] Implement LookupExtractorFactory of namespaced lookup #2926 moves the existing lookup-namespace extension to the lookup framework.
4. [QTL]Cached lookup module for JDBC connectors. #2819 is another implementation of lookup caching (with eviction and cache per lookup) and will need to be reconciled with prior methodologies at some point so we don't have two lookup caching things. How to handle this extension in the mean time is under discussion. It was discussed between @b-slim and myself that the two extensions should eventually be merged into one, but that is not required for 0.9.1
5. [QTL] Support multiple lookup maps within one namespace #2524 has a lot of root changes and needs more thorough review and discussion to make sure the overall lookup direction makes sense with this need.

This issue is not a blocker for 0.9.1, and should be moved to 0.9.2 when it is time.

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