sudo not required explicitly as /bin/ip netns identify is part of READ_ONLY_CMDS in sudoers file (#16258)

Cherry-pick PR :#16115

src/sonic-py-common/sonic_py_common/multi_asic.py

@@ -157,7 +157,7 @@ def get_current_namespace(pid=None):
     """
 
     net_namespace = None
-    command = ["sudo /bin/ip netns identify {}".format(os.getpid() if not pid else pid)]
+    command = ["/bin/ip netns identify {}".format(os.getpid() if not pid else pid)]
     proc = subprocess.Popen(command,
                             stdout=subprocess.PIPE,
                             shell=True,