Fixes unit test failures due to behavior change in OpenJDK 11.0.8
JDK-8245077: Default SSLEngine Created in Server Role
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In JDK 11 and later, `javax.net.ssl.SSLEngine` by default used client
mode when handshaking. As a result, the set of default enabled
protocols may differ to what is expected. `SSLEngine` would usually be
used in server mode. From this JDK release onwards, `SSLEngine` will
default to server mode. The
`javax.net.ssl.SSLEngine.setUseClientMode(boolean mode)` method may be
used to configure the mode.