Solr may attempt to check Chroot after already having connected once

On server startup, we will attempt to load the solr.xml from zookeeper if we have the right properties set, and then later when starting up the core container will take time to verify (and create) the chroot even if it is the same string that we already used before. We can likely skip the second short-lived zookeeper connection to speed up our startup sequence a little bit.

See this attached image from thread profiling during startup.