chore(inputs.opcua): rename regular reads to unregistered reads (#11892)

plugins/inputs/opcua/README.md

@@ -96,8 +96,8 @@ Plugin minimum tested version: 1.16
     ## Set additional valid status codes, StatusOK (0x0) is always considered valid
     # additional_valid_status_codes = ["0xC0"]
 
-    ## Use regular reads instead of registered reads
-    # use_regular_reads = false
+    ## Use unregistered reads instead of registered reads
+    # use_unregistered_reads = false
 ```
 
 ## Node Configuration

plugins/inputs/opcua/opcua.go

@@ -26,7 +26,7 @@ var sampleConfig string
 
 type OpcuaWorkarounds struct {
 	AdditionalValidStatusCodes []string `toml:"additional_valid_status_codes"`
-	UseRegularReads            bool     `toml:"use_regular_reads"`
+	UseUnregisteredReads       bool     `toml:"use_unregistered_reads"`
 }
 
 // OpcUA type
@@ -366,7 +366,7 @@ func Connect(o *OpcUA) error {
 			return fmt.Errorf("error in Client Connection: %s", err)
 		}
 
-		if !o.Workarounds.UseRegularReads {
+		if !o.Workarounds.UseUnregisteredReads {
 			regResp, err := o.client.RegisterNodes(&ua.RegisterNodesRequest{
 				NodesToRegister: o.nodeIDs,
 			})

plugins/inputs/opcua/opcua_test.go

@@ -137,8 +137,8 @@ func TestClient1Integration(t *testing.T) {
 		}
 	}
 
-	// test regular reads workaround
-	o.Workarounds.UseRegularReads = true
+	// test unregistered reads workaround
+	o.Workarounds.UseUnregisteredReads = true
 
 	for i := range o.nodeData {
 		o.nodeData[i] = OPCData{}

plugins/inputs/opcua/sample.conf

@@ -86,5 +86,5 @@
     ## Set additional valid status codes, StatusOK (0x0) is always considered valid
     # additional_valid_status_codes = ["0xC0"]
 
-    ## Use regular reads instead of registered reads
-    # use_regular_reads = false
+    ## Use unregistered reads instead of registered reads
+    # use_unregistered_reads = false