Fix to prevent classification all portchannels is External (sonic-net…

…#5202)

Signed-off-by: Arvindsrinivasan Lakshmi Narasimhan <arlakshm@microsoft.com>
Fix the checks in the API is_port_channel_internal

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

@@ -265,7 +265,7 @@ def is_port_channel_internal(port_channel, namespace=None):
  port_channels = config_db.get_table(PORT_CHANNEL_CFG_DB_TABLE)
 
  if port_channel in port_channels:
- if 'members' in port_channel:
+ if 'members' in port_channels[port_channel]:
  members = port_channels[port_channel]['members']
  if is_port_internal(members[0], namespace):
  return True