Correct the sflow default sample rate (sonic-net#1623)

According the PR: SONiC#746, the sample rate should be "ifSpeed / 1e6".

Signed-off-by: Fred Yu [email protected]

Author: fredyu190011

cfgmgr/sflowmgr.h

@@ -19,14 +19,14 @@ namespace swss {
 #define SFLOW_SAMPLE_RATE_KEY_10G  "10000"
 #define SFLOW_SAMPLE_RATE_KEY_1G   "1000"
 
-#define SFLOW_SAMPLE_RATE_VALUE_400G "40000"
-#define SFLOW_SAMPLE_RATE_VALUE_200G "20000"
-#define SFLOW_SAMPLE_RATE_VALUE_100G "10000"
-#define SFLOW_SAMPLE_RATE_VALUE_50G  "5000"
-#define SFLOW_SAMPLE_RATE_VALUE_40G  "4000"
-#define SFLOW_SAMPLE_RATE_VALUE_25G  "2500"
-#define SFLOW_SAMPLE_RATE_VALUE_10G  "1000"
-#define SFLOW_SAMPLE_RATE_VALUE_1G   "100"
+#define SFLOW_SAMPLE_RATE_VALUE_400G "400000"
+#define SFLOW_SAMPLE_RATE_VALUE_200G "200000"
+#define SFLOW_SAMPLE_RATE_VALUE_100G "100000"
+#define SFLOW_SAMPLE_RATE_VALUE_50G  "50000"
+#define SFLOW_SAMPLE_RATE_VALUE_40G  "40000"
+#define SFLOW_SAMPLE_RATE_VALUE_25G  "25000"
+#define SFLOW_SAMPLE_RATE_VALUE_10G  "10000"
+#define SFLOW_SAMPLE_RATE_VALUE_1G   "1000"
 
 #define SFLOW_ERROR_SPEED_STR "error"
 

tests/test_sflow.py

@@ -1,12 +1,13 @@
 class TestSflow:
     speed_rate_table = {
-        "400000": "40000",
-        "100000": "10000",
-        "50000": "5000",
-        "40000": "4000",
-        "25000": "2500",
-        "10000": "1000",
-        "1000": "100"
+        "400000": "400000",
+        "200000": "200000",
+        "100000": "100000",
+        "50000": "50000",
+        "40000": "40000",
+        "25000": "25000",
+        "10000": "10000",
+        "1000": "1000"
     }
 
     def setup_sflow(self, dvs):