Missed cache for Y-flow with protected path meter after stats topology restart

[yuliiamir]

Steps to reproduce:

Create Y-flow with protected path:

{
  "y_flow_id" : "yflow_protected",
  "shared_endpoint" : {
    "switch_id" : "00:00:00:22:3d:6c:00:40",
    "port_number" : 21
  },
  "maximum_bandwidth" : 1000,
  "path_computation_strategy" : "COST",
  "encapsulation_type" : "TRANSIT_VLAN",
  "max_latency" : null,
  "max_latency_tier2" : null,
  "ignore_bandwidth" : false,
  "periodic_pings" : false,
  "pinned" : false,
  "priority" : null,
  "strict_bandwidth" : false,
  "description" : "autotest y-flow: It seems she hangs upon the cheek of night like a rich jewel in an Ethiope's ear.",
  "allocate_protected_path" : true,
  "diverse_flow_id" : null,
  "sub_flows" : [ {
    "flow_id" : null,
    "endpoint" : {
      "switch_id" : "00:00:00:22:3d:5a:04:87",
      "port_number" : 6,
      "vlan_id" : 3310,
      "inner_vlan_id" : 0
    },
    "shared_endpoint" : {
      "vlan_id" : 1575,
      "inner_vlan_id" : 0
    },
    "description" : null
  }, {
    "flow_id" : null,
    "endpoint" : {
      "switch_id" : "00:00:00:22:3d:6c:00:b8",
      "port_number" : 79,
      "vlan_id" : 3232,
      "inner_vlan_id" : 0
    },
    "shared_endpoint" : {
      "vlan_id" : 184,
      "inner_vlan_id" : 0
    },
    "description" : null
  } ]
}

deactivate and activate back stats topology. There are 2 ways to do it:
Local Env
Download sources of zookeper client
go to bin dir
run ./zkCli.sh -server <server_address>
check state and signal of stats topology
[zk: localhost:2181(CONNECTED) 1] get /kilda/stats/blue/signal
START
[zk: localhost:2181(CONNECTED) 5] get /kilda/stats/blue/state
7
deactivate the topology and check the status
[zk: localhost:2181(CONNECTED) 2] set /kilda/stats/blue/signal SHUTDOWN
[zk: localhost:2181(CONNECTED) 3] get /kilda/stats/blue/state
0
activate it back
[zk: localhost:2181(CONNECTED) 4] set /kilda/stats/blue/signal START
[zk: localhost:2181(CONNECTED) 5] get /kilda/stats/blue/state
7

hardware env
go to emerald
click on stats topology
deactivate it
wait until it will be red
activate it back
Wait 2 mins and check logs

Expected result:
No logs Missed cache for switch **** meterId ****

Actual result:
logs Missed cache for switch **** meterId ****

Ex.: Missed cache for switch '00:00:00:22:3d:6c:00:40' meterId '2006' ()