Merge PR #5111: Add linters from new golangci version

.golangci.yml

@@ -16,6 +16,8 @@ linters:
     - scopelint
     - varcheck
     - godox
+    - funlen
+    - whitespace
 
 issues:
   exclude-rules:
@@ -28,3 +30,10 @@ issues:
     - text: "don't use an underscore in package name"
       linters:
         - golint
+    - text: "ST1003:"
+      linters:
+        - stylecheck
+
+linters-settings:
+  dogsled:
+    max-blank-identifiers: 3

types/context_test.go

@@ -91,7 +91,7 @@ func TestLogContext(t *testing.T) {
 	require.Equal(t, *logger.logs, []string{"debug", "info", "error"})
 }
 
-type dummy int64
+type dummy int64 //nolint: unused
 
 func (d dummy) Clone() interface{} {
 	return d