Javaagent auth extension #13

Job	Run time
Shadow Jar Build (Java 11)	4m 26s
Stylecheck (root)	3m 8s
Stylecheck (examples/instrumentation-quickstart)	36s
Test (root, java-11)	6m 8s
Test (examples/instrumentation-quickstart, java-11)	54s
	15m 12s

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