[E1031] Bugfix for Python syntax error in sonic_platform/common.py (#18386)

Why I did it
Bugfix for Python syntax error in sonic_platform/common.py.
A method of class need to have self as parameter.

Fixing below issue:

e1031:~$ show int st
Traceback (most recent call last):
  File "/usr/local/bin/intfutil", line 836, in <module>
    main()
  File "/usr/local/bin/intfutil", line 819, in main
    interface_stat.display_intf_status()
  File "/usr/local/bin/intfutil", line 448, in display_intf_status
    self.get_intf_status()
  File "/usr/local/lib/python3.9/dist-packages/utilities_common/multi_asic.py", line 157, in wrapped_run_on_all_asics
    func(self,  *args, **kwargs)
  File "/usr/local/bin/intfutil", line 529, in get_intf_status
    self.portchannel_speed_dict = po_speed_dict(self.po_int_dict, self.db)
  File "/usr/local/bin/intfutil", line 334, in po_speed_dict
    optics_type = port_optics_get(appl_db, value[0], PORT_OPTICS_TYPE)
  File "/usr/local/bin/intfutil", line 224, in port_optics_get
    if is_rj45_port(intf_name):
  File "/usr/local/lib/python3.9/dist-packages/utilities_common/platform_sfputil_helper.py", line 120, in is_rj45_port
    platform_chassis = sonic_platform.platform.Platform().get_chassis()
  File "/usr/local/lib/python3.9/dist-packages/sonic_platform/platform.py", line 21, in __init__
    self._chassis = Chassis()
  File "/usr/local/lib/python3.9/dist-packages/sonic_platform/chassis.py", line 37, in __init__
    self._is_host = self._api_common.is_host()
TypeError: is_host() takes 0 positional arguments but 1 was given
Work item tracking
Microsoft ADO (number only): 27208152
How I did it
Add self parameter to function Common::is_host().

How to verify it
Verified on E1031 DUT with this patch.

device/celestica/x86_64-cel_e1031-r0/sonic_platform/common.py

@@ -183,7 +183,7 @@ class Common:
             return False
         return True
 
-    def is_host():
+    def is_host(self):
         """
         Test whether current process is running on the host or an docker
         return True for host and False for docker