NIFI-5329 Made a client service an optional source of connection pool…

[MikeThomsen]

…ing in Mongo processors.

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[MikeThomsen]

Mongo_client_test.xml.txt

That is a flow for testing the functionality against a Mongo server running on localhost:27017.

[patricker]

@MikeThomsen, you typo'd the JIRA ticket number associated with this PR. (NIFI-5329 vs NIFI-5239); I keep editing my own comment... looks like you used both JIRA numbers in your commit comments, one as 5329, one as 5239. Since NIFI-5329 is about removing files from queues... :)

[MikeThomsen]

Thanks. Ill redo this then..