scylla_node: print check_socket_available failure to log

in cases there are failure in dtest runs, those print was
going to stdout, which is hard to track, and might not be
save at all in when using `pytest-xdist`

ccmlib/scylla_node.py

@@ -24,7 +24,7 @@
 import re
 import requests
 
-from ccmlib.common import CASSANDRA_SH, BIN_DIR, wait_for, copy_directory
+from ccmlib.common import CASSANDRA_SH, BIN_DIR, wait_for, copy_directory, print_if_standalone
 
 from ccmlib import common
 from ccmlib.node import Node, NodeUpgradeError
@@ -533,10 +533,10 @@ def start(self, join_ring=True, no_wait=False, verbose=False,
                     try:
                         common.check_socket_available(itf)
                     except Exception as msg:
-                        print(f"{msg}. Looking for offending processes...")
+                        print_if_standalone(f"{msg}. Looking for offending processes...", debug_callback=logging.error)
                         for proc in psutil.process_iter():
                             if any(self.cluster.ipprefix in cmd for cmd in proc.cmdline()):
-                                print(f"name={proc.name()} pid={proc.pid} cmdline={proc.cmdline()}")
+                                print_if_standalone(f"name={proc.name()} pid={proc.pid} cmdline={proc.cmdline()}",  debug_callback=logging.error)
                         raise msg
 
         marks = []