util: Port all code to new errwrap package

This should keep things more uniform.

engine/resources/augeas.go

@@ -27,8 +27,8 @@ import (
 	"github.com/purpleidea/mgmt/engine"
 	"github.com/purpleidea/mgmt/engine/traits"
 	"github.com/purpleidea/mgmt/recwatch"
+	"github.com/purpleidea/mgmt/util/errwrap"
 
-	errwrap "github.com/pkg/errors"
 	// FIXME: we vendor go/augeas because master requires augeas 1.6.0
 	// and libaugeas-dev-1.6.0 is not yet available in a PPA.
 	"honnef.co/go/augeas"

engine/resources/aws_ec2.go

@@ -34,6 +34,7 @@ import (
 
 	"github.com/purpleidea/mgmt/engine"
 	"github.com/purpleidea/mgmt/engine/traits"
+	"github.com/purpleidea/mgmt/util/errwrap"
 
 	"github.com/aws/aws-sdk-go/aws"
 	"github.com/aws/aws-sdk-go/aws/awserr"
@@ -43,7 +44,6 @@ import (
 	"github.com/aws/aws-sdk-go/service/ec2"
 	"github.com/aws/aws-sdk-go/service/sns"
 	multierr "github.com/hashicorp/go-multierror"
-	errwrap "github.com/pkg/errors"
 )
 
 func init() {

engine/resources/cron.go

@@ -31,12 +31,12 @@ import (
 	engineUtil "github.com/purpleidea/mgmt/engine/util"
 	"github.com/purpleidea/mgmt/recwatch"
 	"github.com/purpleidea/mgmt/util"
+	"github.com/purpleidea/mgmt/util/errwrap"
 
 	sdbus "github.com/coreos/go-systemd/dbus"
 	"github.com/coreos/go-systemd/unit"
 	systemdUtil "github.com/coreos/go-systemd/util"
 	"github.com/godbus/dbus"
-	errwrap "github.com/pkg/errors"
 )
 
 const (

engine/resources/docker_container.go

@@ -30,13 +30,13 @@ import (
 	"github.com/purpleidea/mgmt/engine"
 	"github.com/purpleidea/mgmt/engine/traits"
 	"github.com/purpleidea/mgmt/util"
+	"github.com/purpleidea/mgmt/util/errwrap"
 
 	"github.com/docker/docker/api/types"
 	"github.com/docker/docker/api/types/container"
 	"github.com/docker/docker/api/types/filters"
 	"github.com/docker/docker/client"
 	"github.com/docker/go-connections/nat"
-	errwrap "github.com/pkg/errors"
 )
 
 const (

engine/resources/exec.go

@@ -32,9 +32,9 @@ import (
 	"github.com/purpleidea/mgmt/engine"
 	"github.com/purpleidea/mgmt/engine/traits"
 	engineUtil "github.com/purpleidea/mgmt/engine/util"
+	"github.com/purpleidea/mgmt/util/errwrap"
 
 	multierr "github.com/hashicorp/go-multierror"
-	errwrap "github.com/pkg/errors"
 )
 
 func init() {

engine/resources/file.go

@@ -36,8 +36,7 @@ import (
 	engineUtil "github.com/purpleidea/mgmt/engine/util"
 	"github.com/purpleidea/mgmt/recwatch"
 	"github.com/purpleidea/mgmt/util"
-
-	errwrap "github.com/pkg/errors"
+	"github.com/purpleidea/mgmt/util/errwrap"
 )
 
 func init() {

engine/resources/group.go

@@ -28,8 +28,7 @@ import (
 	"github.com/purpleidea/mgmt/engine"
 	"github.com/purpleidea/mgmt/engine/traits"
 	"github.com/purpleidea/mgmt/recwatch"
-
-	errwrap "github.com/pkg/errors"
+	"github.com/purpleidea/mgmt/util/errwrap"
 )
 
 func init() {

engine/resources/hostname.go

@@ -25,9 +25,9 @@ import (
 	"github.com/purpleidea/mgmt/engine/traits"
 	engineUtil "github.com/purpleidea/mgmt/engine/util"
 	"github.com/purpleidea/mgmt/util"
+	"github.com/purpleidea/mgmt/util/errwrap"
 
 	"github.com/godbus/dbus"
-	errwrap "github.com/pkg/errors"
 )
 
 func init() {

engine/resources/kv.go

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

engine/resources/mount.go

@@ -33,13 +33,13 @@ import (
 	engineUtil "github.com/purpleidea/mgmt/engine/util"
 	"github.com/purpleidea/mgmt/recwatch"
 	"github.com/purpleidea/mgmt/util"
+	"github.com/purpleidea/mgmt/util/errwrap"
 
 	sdbus "github.com/coreos/go-systemd/dbus"
 	"github.com/coreos/go-systemd/unit"
 	systemdUtil "github.com/coreos/go-systemd/util"
 	fstab "github.com/deniswernert/go-fstab"
 	"github.com/godbus/dbus"
-	errwrap "github.com/pkg/errors"
 	"golang.org/x/sys/unix"
 )
 

engine/resources/net.go

@@ -34,10 +34,10 @@ import (
 	"github.com/purpleidea/mgmt/engine/traits"
 	"github.com/purpleidea/mgmt/recwatch"
 	"github.com/purpleidea/mgmt/util"
+	"github.com/purpleidea/mgmt/util/errwrap"
 	"github.com/purpleidea/mgmt/util/socketset"
 
 	multierr "github.com/hashicorp/go-multierror"
-	errwrap "github.com/pkg/errors"
 	// XXX: Do NOT use subscribe methods from this lib, as they are racey and
 	// do not clean up spawned goroutines. Should be replaced when a suitable
 	// alternative is available.

engine/resources/nspawn.go

@@ -27,12 +27,12 @@ import (
 	"github.com/purpleidea/mgmt/engine/traits"
 	engineUtil "github.com/purpleidea/mgmt/engine/util"
 	"github.com/purpleidea/mgmt/util"
+	"github.com/purpleidea/mgmt/util/errwrap"
 
 	systemdDbus "github.com/coreos/go-systemd/dbus"
 	machined "github.com/coreos/go-systemd/machine1"
 	systemdUtil "github.com/coreos/go-systemd/util"
 	"github.com/godbus/dbus"
-	errwrap "github.com/pkg/errors"
 )
 
 const (

engine/resources/packagekit/packagekit.go

@@ -27,10 +27,10 @@ import (
 
 	engineUtil "github.com/purpleidea/mgmt/engine/util"
 	"github.com/purpleidea/mgmt/util"
+	"github.com/purpleidea/mgmt/util/errwrap"
 
 	"github.com/godbus/dbus"
 	multierr "github.com/hashicorp/go-multierror"
-	errwrap "github.com/pkg/errors"
 )
 
 // global tweaks of verbosity and code path

engine/resources/password.go

@@ -29,8 +29,7 @@ import (
 	"github.com/purpleidea/mgmt/engine"
 	"github.com/purpleidea/mgmt/engine/traits"
 	"github.com/purpleidea/mgmt/recwatch"
-
-	errwrap "github.com/pkg/errors"
+	"github.com/purpleidea/mgmt/util/errwrap"
 )
 
 func init() {

engine/resources/pkg.go

@@ -26,8 +26,7 @@ import (
 	"github.com/purpleidea/mgmt/engine/resources/packagekit"
 	"github.com/purpleidea/mgmt/engine/traits"
 	"github.com/purpleidea/mgmt/util"
-
-	errwrap "github.com/pkg/errors"
+	"github.com/purpleidea/mgmt/util/errwrap"
 )
 
 func init() {

engine/resources/svc.go

@@ -28,11 +28,11 @@ import (
 	"github.com/purpleidea/mgmt/engine/traits"
 	engineUtil "github.com/purpleidea/mgmt/engine/util"
 	"github.com/purpleidea/mgmt/util"
+	"github.com/purpleidea/mgmt/util/errwrap"
 
 	systemd "github.com/coreos/go-systemd/dbus" // change namespace
 	systemdUtil "github.com/coreos/go-systemd/util"
 	"github.com/godbus/dbus" // namespace collides with systemd wrapper
-	errwrap "github.com/pkg/errors"
 )
 
 func init() {

engine/resources/user.go

@@ -30,8 +30,7 @@ import (
 	"github.com/purpleidea/mgmt/engine"
 	"github.com/purpleidea/mgmt/engine/traits"
 	"github.com/purpleidea/mgmt/recwatch"
-
-	errwrap "github.com/pkg/errors"
+	"github.com/purpleidea/mgmt/util/errwrap"
 )
 
 func init() {

engine/resources/virt.go

@@ -30,10 +30,10 @@ import (
 	"github.com/purpleidea/mgmt/engine"
 	"github.com/purpleidea/mgmt/engine/traits"
 	"github.com/purpleidea/mgmt/util"
+	"github.com/purpleidea/mgmt/util/errwrap"
 
 	"github.com/libvirt/libvirt-go"
 	libvirtxml "github.com/libvirt/libvirt-go-xml"
-	errwrap "github.com/pkg/errors"
 )
 
 func init() {