Fix second bug in crontab parsing (#595)

Co-authored-by: hazayan <[email protected]>

Author: hazayan

pyinfra/facts/server.py

@@ -384,7 +384,7 @@ def process(output):
                 continue
 
             if line.startswith('@'):
-                special_time, command = line.split(' ', 1)
+                special_time, command = line.split(None, 1)
                 crons[command] = {
                     'special_time': special_time,
                     'comments': current_comments,