Failed to load LDAPGroupsCache component when upgrading/uninstalled a extension at root level

When uninstalling/upgrade another JAR extension the authenticator JAR is reloaded but XWiki keep using the old class which was loaded at startup from what was indicated in xwiki.cfg.

There is various ways to improve that on XWiki side but not so easy to find a workaround on LDAP side that is not a crappy hack.

The current workaround is to restart XWiki.