Dev: bootstrap: Skip ssh-agent warning when cluster is running

Since at this time the ssh stage has finished, we can skip the warning

crmsh/bootstrap.py

@@ -612,7 +612,7 @@ def check_prereqs():
         logger.warning("{} is not configured to start at system boot.".format(timekeeper))
         warned = True
 
-    if _context.use_ssh_agent == False and 'SSH_AUTH_SOCK' in os.environ:
+    if not _context.cluster_is_running and _context.use_ssh_agent == False and 'SSH_AUTH_SOCK' in os.environ:
         msg = "$SSH_AUTH_SOCK is detected. As a tip, using the --use-ssh-agent option could avoid generate local root ssh keys on cluster nodes."
         logger.warning(msg)
         warned = True