Use github.com/ghodss/yaml to parse k8s config (#5643)

Gopkg.lock

@@ -403,6 +403,14 @@
   revision = "d1bbc0cffaf9849ddcae7b9efffae33e2dd52e9a"
   version = "v1.2.0"
 
+[[projects]]
+  branch = "master"
+  digest = "1:ec95c1c49fbec27ab5383b9c47fae5c2fe1d97ac5b41d36d78e17588a44e9f3f"
+  name = "github.com/ghodss/yaml"
+  packages = ["."]
+  pruneopts = ""
+  revision = "25d852aebe32c875e9c044af3eef9c7dc6bc777f"
+
 [[projects]]
   digest = "1:858b7fe7b0f4bc7ef9953926828f2816ea52d01a88d72d1c45bc8c108f23c356"
   name = "github.com/go-ini/ini"
@@ -1547,6 +1555,7 @@
     "github.com/ericchiang/k8s/apis/meta/v1",
     "github.com/ericchiang/k8s/apis/resource",
     "github.com/ericchiang/k8s/util/intstr",
+    "github.com/ghodss/yaml",
     "github.com/go-logfmt/logfmt",
     "github.com/go-redis/redis",
     "github.com/go-sql-driver/mysql",

Gopkg.toml

@@ -269,6 +269,10 @@
   name = "github.com/go-logfmt/logfmt"
   version = "0.4.0"
 
+[[constraint]]
+  branch = "master"
+  name = "github.com/ghodss/yaml"
+
 [[override]]
   name = "golang.org/x/crypto"
   source = "https://github.com/golang/crypto.git"

plugins/inputs/prometheus/kubernetes.go

@@ -14,7 +14,7 @@ import (
 
 	"github.com/ericchiang/k8s"
 	corev1 "github.com/ericchiang/k8s/apis/core/v1"
-	"gopkg.in/yaml.v2"
+	"github.com/ghodss/yaml"
 )
 
 type payload struct {