Move kubeconfig utility to a shared pkg

Signed-off-by: Ahmet Alp Balkan <ahmetb@google.com>

cmd/kubectx/current.go

@@ -6,7 +6,7 @@ import (
 
 	"github.com/pkg/errors"
 
-	"github.com/ahmetb/kubectx/cmd/kubectx/kubeconfig"
+	"github.com/ahmetb/kubectx/internal/kubeconfig"
 )
 
 // CurrentOp prints the current context

cmd/kubectx/delete.go

@@ -5,7 +5,7 @@ import (
 
 	"github.com/pkg/errors"
 
-	"github.com/ahmetb/kubectx/cmd/kubectx/kubeconfig"
+	"github.com/ahmetb/kubectx/internal/kubeconfig"
 )
 
 // DeleteOp indicates intention to delete contexts.

cmd/kubectx/kubeconfig.go

@@ -6,7 +6,7 @@ import (
 
 	"github.com/pkg/errors"
 
-	"github.com/ahmetb/kubectx/cmd/kubectx/kubeconfig"
+	"github.com/ahmetb/kubectx/internal/kubeconfig"
 )
 
 var (

cmd/kubectx/list.go

@@ -8,7 +8,7 @@ import (
 	"github.com/fatih/color"
 	"github.com/pkg/errors"
 
-	"github.com/ahmetb/kubectx/cmd/kubectx/kubeconfig"
+	"github.com/ahmetb/kubectx/internal/kubeconfig"
 )
 
 // ListOp describes listing contexts.

cmd/kubectx/rename.go

@@ -6,7 +6,7 @@ import (
 
 	"github.com/pkg/errors"
 
-	"github.com/ahmetb/kubectx/cmd/kubectx/kubeconfig"
+	"github.com/ahmetb/kubectx/internal/kubeconfig"
 )
 
 // RenameOp indicates intention to rename contexts.

cmd/kubectx/switch.go

@@ -5,7 +5,7 @@ import (
 
 	"github.com/pkg/errors"
 
-	"github.com/ahmetb/kubectx/cmd/kubectx/kubeconfig"
+	"github.com/ahmetb/kubectx/internal/kubeconfig"
 )
 
 // SwitchOp indicates intention to switch contexts.

cmd/kubectx/unset.go

@@ -6,7 +6,7 @@ import (
 
 	"github.com/pkg/errors"
 
-	"github.com/ahmetb/kubectx/cmd/kubectx/kubeconfig"
+	"github.com/ahmetb/kubectx/internal/kubeconfig"
 )
 
 // UnsetOp indicates intention to remove current-context preference.
@@ -26,6 +26,6 @@ func (_ UnsetOp) Run(_, stderr io.Writer) error {
 		return errors.Wrap(err, "failed to save kubeconfig file after modification")
 	}
 
-	_, err := fmt.Fprintln(stderr, "Successfully unset the current context")
+	_, err := fmt.Fprintln(stderr, "Successfully unset the active context for kubectl.")
 	return errors.Wrap(err, "write error")
 }