Copp: trap group SET, DEL and SET fails

[rajkumar38]

Steps:

1. Load 00-copp.config.json.

2. Initiate DEL for one of the trap group.
   root@sonic:/# cat arp.json
   [
   {
   "COPP_TABLE:trap.group.arp": {
   "trap_ids": "arp_req,arp_resp,neigh_discovery",
   "trap_action":"copy",
   "trap_priority":"4",
   "queue": "3",
   "meter_type":"packets",
   "mode":"sr_tcm",
   "cir":"900",
   "cbs":"900",
   "red_action":"drop"
   },
   "OP": "DEL"
   }
   ]

3. Re-Create the trap group
   root@sonic:/# cat arp.json
   [
   {
   "COPP_TABLE:trap.group.arp": {
   "trap_ids": "arp_req,arp_resp,neigh_discovery",
   "trap_action":"copy",
   "trap_priority":"4",
   "queue": "3",
   "meter_type":"packets",
   "mode":"sr_tcm",
   "cir":"900",
   "cbs":"900",
   "red_action":"drop"
   },
   "OP": "SET"
   }
   ]

Looking copporch.cpp, after Step(2), trap-ids are mapped to default trap group and while adding back we may have to remove from default trap-group and add it in new trap-group.

Logs:
Dec 13 23:15:04.558399 sonic NOTICE swss#orchagent: :- removePolicer: Remove policer for trap group trap.group.arp

Dec 13 23:47:37.116287 sonic NOTICE swss#swssconfig: :- main: Loading config from JSON file:arp.json...
Dec 13 23:47:37.120427 sonic NOTICE swss#orchagent: :- processCoppRule: Create host interface trap group trap.group.arp
Dec 13 23:47:37.121070 sonic NOTICE swss#orchagent: :- createPolicer: Create policer for trap group trap.group.arp
Dec 13 23:47:37.121070 sonic NOTICE swss#orchagent: :- createPolicer: Bind policer to trap group trap.group.arp:
Dec 13 23:47:37.121070 sonic ERR swss#orchagent: :- meta_generic_validation_create: attribute key SAI_HOSTIF_TRAP_ATTR_TRAP_TYPE:8192; already exists, can't create
Dec 13 23:47:37.121391 sonic ERR swss#orchagent: :- applyAttributesToTrapIds: Failed to create trap 8192, rv:-5
Dec 13 23:47:37.121552 sonic ERR swss#orchagent: :- doTask: Processing copp task item failed, exiting.