SimpleSecurityNioTransportTests#testRenegotiation hangs

[elasticmachine]

Original comment by @jasontedor:

The test LINK REDACTED (presumably due to a missed callback, deadlock, etc.):

09:47:33 HEARTBEAT J2 EMAIL REDACTED 2018-04-20T13:47:33, stalled for 1191s at: SimpleSecurityNioTransportTests.testRenegotiation

Would you take a look @tbrooks8?

[romseygeek]

Another instance:
https://elasticsearch-ci.elastic.co/job/elastic+elasticsearch+master+matrix-java-periodic/ES_BUILD_JAVA=java10,ES_RUNTIME_JAVA=java10,nodes=virtual&&linux/48/console

[Tim-Brooks]

Should be fixed.