golangci-lint: Update deprecated linter configurations

.golangci.yml

@@ -4,25 +4,17 @@
 # options for analysis running
 run:
   # timeout for analysis, e.g. 30s, 5m, default is 1m
-  deadline: 5m
+  timeout: 5m
 
   # exit code when at least one issue was found, default is 1
   issues-exit-code: 1
 
-  # which dirs to skip: they won't be analyzed;
-  # can use regexp here: generated.*, regexp is applied on full path;
-  # default value is empty list, but next dirs are always skipped independently
-  # from this option's value:
-  #     vendor$, third_party$, testdata$, examples$, Godeps$, builtin$
-  skip-dirs:
-    - vendor
-    - internal/cortex
-
-
 # output configuration options
 output:
-  # colored-line-number|line-number|json|tab|checkstyle, default is "colored-line-number"
-  format: colored-line-number
+  # The formats used to render issues.
+  formats:
+    - format: colored-line-number
+      path: stdout
 
   # print lines of code with issue, default is true
   print-issued-lines: true
@@ -51,7 +43,11 @@ linters:
 
 linters-settings:
   errcheck:
-    exclude: ./.errcheck_excludes.txt
+    # List of functions to exclude from checking, where each entry is a single function to exclude.
+    exclude-functions:
+      - (github.com/go-kit/log.Logger).Log
+      - fmt.Fprintln
+      - fmt.Fprint
   misspell:
     locale: US
   goconst:
@@ -80,3 +76,7 @@ issues:
     - linters:
         - unused
       text: "ruleAndAssert"
+  # Which dirs to exclude: issues from them won't be reported.
+  exclude-dirs:
+    - vendor
+    - internal/cortex