[CBF] Added configuration templates to generate configs for CBF (#8689)

Updated CBF config packaging
[build_templates]: Added default configuration file for CBF
[rules]: Added loading rule for CBF config

 The CBF default config is required to load default start-up config on CBF capable platforms

files/build_templates/cbf_config.j2

@@ -0,0 +1,82 @@
+{
+    "DSCP_TO_FC_MAP": {
+        "AZURE": {
+            "0" : "1",
+            "1" : "1",
+            "2" : "1",
+            "3" : "3",
+            "4" : "4",
+            "5" : "2",
+            "6" : "1",
+            "7" : "1",
+            "8" : "0",
+            "9" : "1",
+            "10": "1",
+            "11": "1",
+            "12": "1",
+            "13": "1",
+            "14": "1",
+            "15": "1",
+            "16": "1",
+            "17": "1",
+            "18": "1",
+            "19": "1",
+            "20": "1",
+            "21": "1",
+            "22": "1",
+            "23": "1",
+            "24": "1",
+            "25": "1",
+            "26": "1",
+            "27": "1",
+            "28": "1",
+            "29": "1",
+            "30": "1",
+            "31": "1",
+            "32": "1",
+            "33": "1",
+            "34": "1",
+            "35": "1",
+            "36": "1",
+            "37": "1",
+            "38": "1",
+            "39": "1",
+            "40": "1",
+            "41": "1",
+            "42": "1",
+            "43": "1",
+            "44": "1",
+            "45": "1",
+            "46": "5",
+            "47": "1",
+            "48": "6",
+            "49": "1",
+            "50": "1",
+            "51": "1",
+            "52": "1",
+            "53": "1",
+            "54": "1",
+            "55": "1",
+            "56": "1",
+            "57": "1",
+            "58": "1",
+            "59": "1",
+            "60": "1",
+            "61": "1",
+            "62": "1",
+            "63": "1"
+        }
+    },
+    "EXP_TO_FC_MAP": {
+        "AZURE": {
+            "0": "0",
+            "1": "1",
+            "2": "2",
+            "3": "3",
+            "4": "4",
+            "5": "5",
+            "6": "6",
+            "7": "7"
+        }
+    }
+}

rules/scripts.dep

@@ -6,5 +6,6 @@ $(CONFIGDB_LOAD_SCRIPT)_CACHE_MODE  := none
 $(BUFFERS_CONFIG_TEMPLATE)_CACHE_MODE  := none
 $(UPDATE_PROC_VARIABLES_SCRIPT)_CACHE_MODE  := none
 $(QOS_CONFIG_TEMPLATE)_CACHE_MODE  := none
+$(CBF_CONFIG_TEMPLATE)_CACHE_MODE  := none
 $(SUPERVISOR_PROC_EXIT_LISTENER_SCRIPT)_CACHE_MODE  := none
 $(COPP_CONFIG_TEMPLATE)_CACHE_MODE  := none

rules/scripts.mk

@@ -14,6 +14,9 @@ $(BUFFERS_CONFIG_TEMPLATE)_PATH = files/build_templates
 QOS_CONFIG_TEMPLATE = qos_config.j2
 $(QOS_CONFIG_TEMPLATE)_PATH = files/build_templates
 
+CBF_CONFIG_TEMPLATE = cbf_config.j2
+$(CBF_CONFIG_TEMPLATE)_PATH = files/build_templates
+
 SUPERVISOR_PROC_EXIT_LISTENER_SCRIPT = supervisor-proc-exit-listener
 $(SUPERVISOR_PROC_EXIT_LISTENER_SCRIPT)_PATH = files/scripts
 
@@ -34,6 +37,7 @@ SONIC_COPY_FILES += $(CONFIGDB_LOAD_SCRIPT) \
                     $(ARP_UPDATE_VARS_TEMPLATE) \
                     $(BUFFERS_CONFIG_TEMPLATE) \
                     $(QOS_CONFIG_TEMPLATE) \
+                    $(CBF_CONFIG_TEMPLATE) \
                     $(SUPERVISOR_PROC_EXIT_LISTENER_SCRIPT) \
                     $(SYSCTL_NET_CONFIG) \
                     $(UPDATE_CHASSISDB_CONFIG_SCRIPT) \