[SHIRO-842] log4j update

[bmarwell]

• Fixes SHIRO-842
• removes all log4j1 usages (test usages)
• replaces "test if logged" with LoggerContextRule

TBD:

• Need to remove the code cleanup from my IDE
• Replace all log4j.properties with log4j2.xml

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[bdemers]

+1
Feel free to ignore my dependency scope comment, that's something we can clean up in bulk after (and include all of the other test dependencies at the same time)