util: Port all code to new errwrap package

This should keep things more uniform.

lang/funcs/core/core_test.go

@@ -32,10 +32,10 @@ import (
 	"github.com/purpleidea/mgmt/lang/interfaces"
 	"github.com/purpleidea/mgmt/lang/types"
 	"github.com/purpleidea/mgmt/util"
+	"github.com/purpleidea/mgmt/util/errwrap"
 
 	"github.com/davecgh/go-spew/spew"
 	"github.com/kylelemons/godebug/pretty"
-	errwrap "github.com/pkg/errors"
 )
 
 func TestPureFuncExec0(t *testing.T) {

lang/funcs/core/example/vumeter_func.go

@@ -29,8 +29,7 @@ import (
 	"github.com/purpleidea/mgmt/lang/funcs"
 	"github.com/purpleidea/mgmt/lang/interfaces"
 	"github.com/purpleidea/mgmt/lang/types"
-
-	errwrap "github.com/pkg/errors"
+	"github.com/purpleidea/mgmt/util/errwrap"
 )
 
 func init() {

lang/funcs/core/fmt/printf_func.go

@@ -24,8 +24,7 @@ import (
 	"github.com/purpleidea/mgmt/lang/interfaces"
 	"github.com/purpleidea/mgmt/lang/types"
 	"github.com/purpleidea/mgmt/util"
-
-	errwrap "github.com/pkg/errors"
+	"github.com/purpleidea/mgmt/util/errwrap"
 )
 
 func init() {

lang/funcs/core/os/readfile_func.go

@@ -26,8 +26,7 @@ import (
 	"github.com/purpleidea/mgmt/lang/interfaces"
 	"github.com/purpleidea/mgmt/lang/types"
 	"github.com/purpleidea/mgmt/recwatch"
-
-	errwrap "github.com/pkg/errors"
+	"github.com/purpleidea/mgmt/util/errwrap"
 )
 
 func init() {

lang/funcs/core/random1_func.go

@@ -25,8 +25,7 @@ import (
 	"github.com/purpleidea/mgmt/lang/funcs"
 	"github.com/purpleidea/mgmt/lang/interfaces"
 	"github.com/purpleidea/mgmt/lang/types"
-
-	errwrap "github.com/pkg/errors"
+	"github.com/purpleidea/mgmt/util/errwrap"
 )
 
 const alphabet = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"

lang/funcs/core/sys/cpucount_fact.go

@@ -28,9 +28,9 @@ import (
 
 	"github.com/purpleidea/mgmt/lang/funcs/facts"
 	"github.com/purpleidea/mgmt/lang/types"
+	"github.com/purpleidea/mgmt/util/errwrap"
 	"github.com/purpleidea/mgmt/util/socketset"
 
-	errwrap "github.com/pkg/errors"
 	"golang.org/x/sys/unix"
 )
 

lang/funcs/core/sys/load_fact.go

@@ -22,8 +22,7 @@ import (
 
 	"github.com/purpleidea/mgmt/lang/funcs/facts"
 	"github.com/purpleidea/mgmt/lang/types"
-
-	errwrap "github.com/pkg/errors"
+	"github.com/purpleidea/mgmt/util/errwrap"
 )
 
 const (

lang/funcs/core/sys/uptime_fact.go

@@ -22,8 +22,7 @@ import (
 
 	"github.com/purpleidea/mgmt/lang/funcs/facts"
 	"github.com/purpleidea/mgmt/lang/types"
-
-	errwrap "github.com/pkg/errors"
+	"github.com/purpleidea/mgmt/util/errwrap"
 )
 
 func init() {

lang/funcs/core/template_func.go

@@ -28,8 +28,7 @@ import (
 	"github.com/purpleidea/mgmt/lang/funcs/simple"
 	"github.com/purpleidea/mgmt/lang/interfaces"
 	"github.com/purpleidea/mgmt/lang/types"
-
-	errwrap "github.com/pkg/errors"
+	"github.com/purpleidea/mgmt/util/errwrap"
 )
 
 var (

lang/funcs/core/world/exchange_func.go

@@ -23,8 +23,7 @@ import (
 	"github.com/purpleidea/mgmt/lang/funcs"
 	"github.com/purpleidea/mgmt/lang/interfaces"
 	"github.com/purpleidea/mgmt/lang/types"
-
-	errwrap "github.com/pkg/errors"
+	"github.com/purpleidea/mgmt/util/errwrap"
 )
 
 func init() {

lang/funcs/core/world/kvlookup_func.go

@@ -23,8 +23,7 @@ import (
 	"github.com/purpleidea/mgmt/lang/funcs"
 	"github.com/purpleidea/mgmt/lang/interfaces"
 	"github.com/purpleidea/mgmt/lang/types"
-
-	errwrap "github.com/pkg/errors"
+	"github.com/purpleidea/mgmt/util/errwrap"
 )
 
 func init() {

lang/funcs/core/world/schedule_func.go

@@ -37,8 +37,7 @@ import (
 	"github.com/purpleidea/mgmt/lang/funcs"
 	"github.com/purpleidea/mgmt/lang/interfaces"
 	"github.com/purpleidea/mgmt/lang/types"
-
-	errwrap "github.com/pkg/errors"
+	"github.com/purpleidea/mgmt/util/errwrap"
 )
 
 const (