Enable configuration of log4j in libraries

Description

Somewhat more relevant now that we are running into a bug in HttpClient that can be avoided by setting a higher logging level (https://issues.apache.org/jira/browse/HTTPCLIENT-1544).

Should ship with some suitably restrained defaults.

Environment

None

Status

Assignee

Unassigned

Reporter

Kristinn SigurĂ°sson

Labels

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Group Assignee

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ZendeskID

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Estimated Difficulty

None

Actual Difficulty

None

Priority

Major
Configure