Dell S6100: Addition of 10G ports (#9988)

device/dell/x86_64-dell_s6100_c2538-r0/Force10-S6100/port_config.ini

@@ -63,3 +63,5 @@ Ethernet60      81,82     fortyGigE1/4/13    60      40000
 Ethernet61      83,84     fortyGigE1/4/14    61      40000
 Ethernet62      85,86     fortyGigE1/4/15    62      40000
 Ethernet63      87,88     fortyGigE1/4/16    63      40000
+Ethernet64      129       tenGigE1/1         64      10000
+Ethernet65      131       tenGigE1/2         65      10000

src/sonic-config-engine/tests/sample_output/py2/buffers-dell6100.json

@@ -13,10 +13,11 @@
             "Ethernet4": "5m",
             "Ethernet5": "5m",
             "Ethernet46": "5m",
-            "Ethernet34": "5m",
+            "Ethernet29": "5m",
             "Ethernet22": "5m",
             "Ethernet58": "5m",
             "Ethernet59": "5m",
+            "Ethernet28": "5m",
             "Ethernet50": "5m",
             "Ethernet51": "5m",
             "Ethernet52": "5m",
@@ -41,6 +42,7 @@
             "Ethernet32": "5m",
             "Ethernet33": "5m",
             "Ethernet30": "5m",
+            "Ethernet34": "5m",
             "Ethernet31": "5m",
             "Ethernet49": "5m",
             "Ethernet48": "5m",
@@ -52,8 +54,8 @@
             "Ethernet42": "5m",
             "Ethernet41": "5m",
             "Ethernet40": "5m",
-            "Ethernet29": "5m",
-            "Ethernet28": "5m",
+            "Ethernet65": "5m",
+            "Ethernet64": "5m",
             "Ethernet61": "5m",
             "Ethernet60": "5m",
             "Ethernet63": "5m",

src/sonic-config-engine/tests/sample_output/py3/buffers-dell6100.json

@@ -65,7 +65,9 @@
             "Ethernet60": "5m",
             "Ethernet61": "5m",
             "Ethernet62": "5m",
-            "Ethernet63": "5m"
+            "Ethernet63": "5m",
+            "Ethernet64": "5m",
+            "Ethernet65": "5m"
         }
     },