Adapt LLDP config keys to Edgecore 202111 branch (#19)

Author: iljarotar

README.md

@@ -174,6 +174,9 @@ Result:
 
 ### lldp_hello_time
 
+This configuration slightly differs across SONiC versions and might not always have an effect.
+As this tool is tailored for Edgecore SONiC versions 202111.x the LLDP configuration for those versions should work.
+
 Example:
 
 ```yaml
@@ -185,8 +188,8 @@ Result:
 ```json
 {
   "LLDP": {
-    "GLOBAL": {
-      "hello_time": "10"
+    "Global": {
+      "hello_timer": "10"
     }
   }
 }

configdb/fields.go

@@ -84,11 +84,11 @@ const (
 )
 
 type LLDP struct {
-	Global LLDPGlobal `json:"GLOBAL"`
+	Global LLDPGlobal `json:"Global"`
 }
 
 type LLDPGlobal struct {
-	HelloTime string `json:"hello_time,omitempty"`
+	HelloTime string `json:"hello_timer,omitempty"`
 }
 
 type MCLAGDomain struct {

tests/1/expected.json

@@ -171,8 +171,8 @@
     }
   },
   "LLDP": {
-    "GLOBAL": {
-      "hello_time": "10"
+    "Global": {
+      "hello_timer": "10"
     }
   },
   "LOOPBACK_INTERFACE": {

tests/2/expected.json

@@ -120,8 +120,8 @@
     }
   },
   "LLDP": {
-    "GLOBAL": {
-      "hello_time": "10"
+    "Global": {
+      "hello_timer": "10"
     }
   },
   "LOOPBACK_INTERFACE": {

tests/4/expected.json

@@ -178,8 +178,8 @@
     "10.0.0.10": {}
   },
   "LLDP": {
-    "GLOBAL": {
-      "hello_time": "10"
+    "Global": {
+      "hello_timer": "10"
     }
   },
   "LOOPBACK_INTERFACE": {