Merge pull request #1576 from chenrui333/go-1.13

Upgrade golang to v1.13

.travis.yml

@@ -20,7 +20,7 @@ git:
 language: go
 
 go:
-  - "1.12"
+  - "1.13"
 
 go_import_path: sigs.k8s.io/kustomize
 

docs/plugins/execPluginGuidedExample.md

@@ -12,7 +12,7 @@ current setup.
 
 #### requirements
 
- * linux, git, curl, Go 1.12
+ * linux, git, curl, Go 1.13
 
 
 ## Make a place to work
@@ -226,4 +226,3 @@ Above, if you had set
 
 there would be no need to use `XDG_CONFIG_HOME` in the
 _kustomize_ command above.
-

docs/plugins/goPluginGuidedExample.md

@@ -21,7 +21,7 @@ current setup.
 
 #### requirements
 
-* linux, git, curl, Go 1.12
+* linux, git, curl, Go 1.13
 
 For encryption
 
@@ -173,7 +173,7 @@ dependency [skew].
 On load failure
 
  * be sure to build the plugin with the same
-   version of Go (_go1.12_) on the same `$GOOS`
+   version of Go (_go1.13_) on the same `$GOOS`
    (_linux_) and `$GOARCH` (_amd64_) used to build
    the kustomize being [used in this demo].
 

go.mod

@@ -1,6 +1,6 @@
 module sigs.k8s.io/kustomize/v3
 
-go 1.12
+go 1.13
 
 require (
 	github.com/evanphx/json-patch v4.5.0+incompatible

internal/crawl/go.mod

@@ -1,6 +1,6 @@
 module sigs.k8s.io/kustomize/internal/tools
 
-go 1.12
+go 1.13
 
 require (
 	github.com/elastic/go-elasticsearch/v6 v6.8.2

kustomize/go.mod

@@ -1,6 +1,6 @@
 module sigs.k8s.io/kustomize/kustomize/v3
 
-go 1.12
+go 1.13
 
 require (
 	github.com/pkg/errors v0.8.1

pluginator/go.mod

@@ -1,6 +1,6 @@
 module sigs.k8s.io/kustomize/pluginator
 
-go 1.12
+go 1.13
 
 require sigs.k8s.io/kustomize/v3 v3.3.0