Increase ip2me CIR/CBR for faster in-band file transfers (#1000)

Increase incoming packet rate on in-band interfaces to support faster
download of large files. SONiC firmware image download over in-band can
take a lot of time if the incoming packet rate is limited to 600pps. This,
change increases it to 6000pps. Especially when used by Zero Touch Provisioning
or by sonic_installer for firmware upgrade over in-band interfaces.

Signed-off-by: Rajendra Dendukuri <rajendra.dendukuri@broadcom.com>

swssconfig/sample/00-copp.config.json

@@ -50,8 +50,8 @@
             "queue": "1",
             "meter_type":"packets",
             "mode":"sr_tcm",
-            "cir":"600",
-            "cbs":"600",
+            "cir":"6000",
+            "cbs":"6000",
             "red_action":"drop"
         },
         "OP": "SET"