JUL - fix loading of boolean configs

[eyalkoren]

Fixes #133
Adds a JUL integration test that fails without this fix and adds testing for Exception stack trace formatting as array.

[apmmachine]

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• Start Time: 2022-04-28T12:29:24.394+0000

• Duration: 7 min 1 sec

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Test	Results
Failed	0
Passed	243
Skipped	0
Total	243

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