linter: blacklist linters instead of whitelisting

Blacklist linters instead of whitelisting them.  This way, we will
benefit from new linters when updating and it's easier to actually
find and fix open issues.

Signed-off-by: Valentin Rothberg <rothberg@redhat.com>

.golangci.yml

@@ -17,39 +17,20 @@ run:
   skip-files:
     - iopodman.go
 linters:
-  disable-all: true
-  enable:
-    # - bodyclose
-    - deadcode
-    - depguard
-    # dupl really overdid it; disabling
-    # - dupl
-    - errcheck
-    - gofmt
-    - gosimple
-    - govet
-    - ineffassign
-    - nakedret
-    - staticcheck
-    - structcheck
-    - typecheck
-    - unused
-    - varcheck
-    # - gochecknoglobals
-    # - gochecknoinits
-    # - goconst
-    # - gocritic
-    # - gocyclo
-    # - goimports
-    # - golint
-    # - gosec
-    - interfacer
-    # - lll
-    # - maligned
-    # - misspell
-    # - prealloc
-    - scopelint
-    - stylecheck
-    - unconvert
-    # I think we should uncomment this one and used it
-    # - unparam
+  enable-all: true
+  disable:
+    - dupl
+    - funlen
+    - gochecknoglobals
+    - gochecknoinits
+    - goconst
+    - gocritic
+    - gocyclo
+    - golint
+    - goimports
+    - gosec
+    - lll
+    - maligned
+    - misspell
+    - prealloc
+    - unparam