Uniform the SpanLayer type name (#21)

* Uniform the SpanLayer type name

* update the expectedData.yml

lib/skywalking/span_layer.lua

@@ -16,12 +16,12 @@
 -- 
 
 local Layer = {
-    NONE = {name = "NONE", value=0},
-    DB = {name = "DB", value=1},
-    RPC_FRAMEWORK = {name = "RPC_FRAMEWORK", value=2},
-    HTTP = {name = "HTTP", value=3},
+    NONE = {name = "Unknown", value=0},
+    DB = {name = "Database", value=1},
+    RPC_FRAMEWORK = {name = "RPCFramework", value=2},
+    HTTP = {name = "Http", value=3},
     MQ = {name = "MQ", value=4},
-    CACHE = {name = "CACHE", value=5},
+    CACHE = {name = "Cache", value=5},
 }
 
-return Layer
\ No newline at end of file
+return Layer

test/e2e/validator/src/test/resources/expectedData.yaml

@@ -20,7 +20,7 @@ segmentItems:
             parentSpanId: 0
             componentId: 6000
             peer: 'User_Service_Name-nginx:upstream_ip2:port2'
-            spanLayer: HTTP
+            spanLayer: Http
           - operationName: /tier2/lb
             startTime: gt 0
             tags:
@@ -36,7 +36,7 @@ segmentItems:
               - {parentEndpointId: 0, entryEndpointId: 0, parentServiceInstanceId: 1, parentEndpoint: /ingress, parentTraceSegmentId: parentTraceSegmentId,
                  networkAddress: '#User_Service_Name-nginx:upstream_ip:port', parentSpanId: 1,
                  entryServiceInstanceId: 1, networkAddressId: 0, entryEndpoint: /ingress}
-            spanLayer: HTTP
+            spanLayer: Http
       - segmentId: not null
         spans:
           - operationName: /ingress
@@ -48,7 +48,7 @@ segmentItems:
             parentSpanId: 0
             componentId: 6000
             peer: 'User_Service_Name-nginx:upstream_ip:port'
-            spanLayer: HTTP
+            spanLayer: Http
           - operationName: /ingress
             startTime: gt 0
             tags:
@@ -59,5 +59,5 @@ segmentItems:
             spanId: 0
             parentSpanId: -1
             isError: false
-            spanLayer: HTTP
-            componentId: 6000
\ No newline at end of file
+            spanLayer: Http
+            componentId: 6000