Prefer info log message for missing optional modules (#266)

Author: doolio

pylsp/config/config.py

@@ -71,7 +71,7 @@ def __init__(self, root_uri, init_opts, process_id, capabilities):
             try:
                 entry_point.load()
             except Exception as e:  # pylint: disable=broad-except
-                log.warning("Failed to load %s entry point '%s': %s", PYLSP, entry_point.name, e)
+                log.info("Failed to load %s entry point '%s': %s", PYLSP, entry_point.name, e)
                 self._pm.set_blocked(entry_point.name)
 
         # Load the entry points into pluggy, having blocked any failing ones