Don't create the members@ array in config_db for PC when reading from…

… minigraph

When loading from minigraph, for port channels, don't create the
members@ array in config_db in the PORTCHANNEL table. This is no longer
needed or used.

In addition, when adding a port channel member from the CLI, that member
doesn't get added into the members@ array, resulting in a bit of
inconsistency. This gets rid of that inconsistency.

Fixes sonic-net#11873.

Signed-off-by: Saikrishna Arcot <sarcot@microsoft.com>

src/sonic-config-engine/minigraph.py

@@ -532,9 +532,9 @@ def parse_dpg(dpg, hname):
                 intfs_inpc.append(pcmbr_list[i])
                 pc_members[(pcintfname, pcmbr_list[i])] = {}
             if pcintf.find(str(QName(ns, "Fallback"))) != None:
-                pcs[pcintfname] = {'members': pcmbr_list, 'fallback': pcintf.find(str(QName(ns, "Fallback"))).text, 'min_links': str(int(math.ceil(len() * 0.75))), 'lacp_key': 'auto'}
+                pcs[pcintfname] = {'fallback': pcintf.find(str(QName(ns, "Fallback"))).text, 'min_links': str(int(math.ceil(len() * 0.75))), 'lacp_key': 'auto'}
             else:
-                pcs[pcintfname] = {'members': pcmbr_list, 'min_links': str(int(math.ceil(len(pcmbr_list) * 0.75))), 'lacp_key': 'auto' }
+                pcs[pcintfname] = {'min_links': str(int(math.ceil(len(pcmbr_list) * 0.75))), 'lacp_key': 'auto' }
         port_nhipv4_map = {}
         port_nhipv6_map = {}
         nhg_int = ""