Migrate golangci-lint config to v2 (#2781)

Signed-off-by: Matej Vašek <mvasek@redhat.com>

.golangci.yaml

@@ -1,22 +1,17 @@
-#
-# golangci-lint
-#
-# For defaults, see:
-# https://github.com/golangci/golangci-lint/blob/master/.golangci.example.yml
-#
-#
-#
-run:
-  timeout: 5m
-
+version: "2"
 linters:
   enable:
     - unconvert
     - prealloc
     - bodyclose
-
-issues:
-  exclude-rules:
+  exclusions:
+    generated: lax
+    presets:
+      - comments
+      - common-false-positives
+      - legacy
+      - std-error-handling
+    rules:
       - linters:
           - staticcheck
         # Error Text:
@@ -28,4 +23,15 @@ issues:
         #     Name  Type = "value"
         #     Name2      = "value2"
         #   )
-      text: "SA9004:"
+        text: 'SA9004:'
+    paths:
+      - third_party$
+      - builtin$
+      - examples$
+formatters:
+  exclusions:
+    generated: lax
+    paths:
+      - third_party$
+      - builtin$
+      - examples$