Code search intermittently stops working with Java 11 JRE

Code search is likely impacted by the same problem as is described here: https://jira.atlassian.com/browse/BSERV-11796
In fixing BSERV-11796, all that was done was to disable TLSv1.3 in the HTTP Client, however that client instance is specific to the repository importer.

The above is suspected to relate to the following JDK bug:

• JDK-8214418 HttpClient falls in running with 100% cpu usage after an error signalled on channel

Workaround

1) Run Bitbucket Server with Java 8
2) Set -Djdk.tls.disabledAlgorithms=TLSv1.3 in the JVM parameters. Please note that this will disable all outbound TLS connections that use TLSv1.3 for all protocols, not just HTTPS. (AKA LDAPS and newer clients may refuse to connect on older TLS versions)