ASF Jenkins/CI build for Solr 9 is back to normal

[David Smiley <da...@gmail.com>]

I *finally* dug into why the Solr 9 build, modified to use Crave, kept
failing at the bats integration test for the AffinityPlacementPlugin.  It's
because this plugin, in its default configuration, demands at least 20GB of
free space for it to place a replica.  Maybe reasonable in production,
probably not anywhere else (isn't on a personal machine I have).  The Crave
build was configured to use 10GB; it now has a 30GB disk.   The plugin does
log a warning but our bats setup doesn't relay Solr's server side logs to
the console, so it took longer to find clues.

~ David