adopt golangci config from Rancher project

.golangci.json

@@ -0,0 +1,51 @@
+{
+    "linters": {
+        "disable-all": true,
+        "enable": [
+           "govet",
+           "revive",
+           "goimports",
+           "misspell",
+           "ineffassign",
+           "gofmt"
+        ]
+    },
+    "linters-settings": {
+        "govet": {
+            "check-shadowing": false
+        },
+        "gofmt": {
+            "simplify": false
+        }
+    },
+    "run": {
+        "skip-dirs": [
+            "vendor",
+            "tests",
+            "pkg/client",
+            "pkg/generated"
+        ],
+        "tests": false,
+        "timeout": "10m"
+    },
+    "issues": {
+        "exclude-rules": [
+            {
+                "linters": "govet",
+                "text": "^(nilness|structtag)"
+            },
+            {
+                "linters": "revive",
+                "text": "should have comment"
+            },
+            {
+                "linters": "revive",
+                "text": "should be of the form"
+            },
+            {
+                "linters": "typecheck",
+                "text": "imported but not used as apierrors"
+            }
+        ]
+    }
+}

.golangci.yml

@@ -1,130 +0,0 @@
-linters-settings:
-  dupl:
-    threshold: 100
-  funlen:
-    lines: 400
-    statements: 100
-  gci:
-    local-prefixes: github.com/golangci/golangci-lint
-  goconst:
-    min-len: 3
-    min-occurrences: 3
-  gocritic:
-    enabled-tags:
-      - diagnostic
-      - experimental
-      - opinionated
-      - performance
-      - style
-    disabled-checks:
-      - dupImport # https://github.com/go-critic/go-critic/issues/845
-      - ifElseChain
-      - octalLiteral
-      - whyNoLint
-      - wrapperFunc
-  gocyclo:
-    min-complexity: 25
-  goimports:
-    local-prefixes: github.com/golangci/golangci-lint
-  gomnd:
-    settings:
-      mnd:
-        # don't include the "operation" and "assign"
-        checks: argument,case,condition,return
-  govet:
-    check-shadowing: true
-    settings:
-      printf:
-        funcs:
-          - (github.com/golangci/golangci-lint/pkg/logutils.Log).Infof
-          - (github.com/golangci/golangci-lint/pkg/logutils.Log).Warnf
-          - (github.com/golangci/golangci-lint/pkg/logutils.Log).Errorf
-          - (github.com/golangci/golangci-lint/pkg/logutils.Log).Fatalf
-  lll:
-    line-length: 200
-  maligned:
-    suggest-new: true
-  misspell:
-    locale: US
-  nolintlint:
-    allow-leading-space: true # don't require machine-readable nolint directives (i.e. with no leading space)
-    allow-unused: false # report any unused nolint directives
-    require-explanation: false # don't require an explanation for nolint directives
-    require-specific: false # don't require nolint directives to be specific about which linter is being skipped
-  nakedret:
-    max-func-lines: 100
-
-linters:
-  # please, do not use `enable-all`: it's deprecated and will be removed soon.
-  # inverted configuration with `enable-all` and `disable` is not scalable during updates of golangci-lint
-  disable-all: true
-  enable:
-    - bodyclose
-    - deadcode
-    - depguard
-    - dogsled
-    - errcheck
-    - exportloopref
-    - exhaustive
-    - funlen
-    - gochecknoinits
-    - goconst
-    - gocritic
-    - gocyclo
-    - gofmt
-    - goimports
-    - gomnd
-    - goprintffuncname
-    - gosec
-    - gosimple
-    - govet
-    - ineffassign
-    - lll
-    - misspell
-    - nakedret
-    - noctx
-    - nolintlint
-    - revive
-    - rowserrcheck
-    - staticcheck
-    - structcheck
-    - stylecheck
-    - typecheck
-    - unconvert
-    - unparam
-    - unused
-    - varcheck
-    - whitespace
-
-  # don't enable:
-  # - asciicheck
-  # - dupl
-  # - scopelint
-  # - gochecknoglobals
-  # - gocognit
-  # - godot
-  # - godox
-  # - goerr113
-  # - interfacer
-  # - maligned
-  # - nestif
-  # - prealloc
-  # - testpackage
-  # - revive
-  # - wsl
-
-issues:
-  # Excluding configuration per-path, per-linter, per-text and per-source
-  exclude-rules:
-    - path: _test\.go
-      linters:
-        - gomnd
-
-    # https://github.com/go-critic/go-critic/issues/926
-    - linters:
-        - gocritic
-      text: "unnecessaryDefer:"
-
-run:
-  skip-files:
-    - _gen\.go