Latest docker testing image (20210809) does not default support TLSv1 and TLSv1.1

Since deployment of the latest docker testing image (20210809), ci-cassandra.a.o is failing a few tests, e.g.:

• SSTableLoaderEncryptionOptionsTest.bulkLoaderCannotAgreeOnClientTLSProtocol
• NativeTransportEncryptionOptionsTest.negotiatedProtocolMustBeAcceptedProtocolTest
• InternodeEncryptionOptionsTest.negotiatedProtocolMustBeAcceptedProtocolTest

Looking at the logs, the in-jvm node is starting up with

JdkSslContext.java:97 - Default protocols (JDK): [TLSv1.2] 

Running the test locally works, and the matching line is

JdkSslContext.java:97 - Default protocols (JDK): [TLSv1.2, TLSv1.1, TLSv1]

The docker image is using openjdk version "1.8.0_282".

Upgrading and using 1.8.0_302 locally reproduces the failure.