Remove github.com/pkg/errors with appropriate replacements (#3172)

* errors.Wrap* removal

Signed-off-by: Sanket Sudake <sanketsudake@gmail.com>

* remove errors.Errorf

Signed-off-by: Sanket Sudake <sanketsudake@gmail.com>

* Remove remaining calls

Signed-off-by: Sanket Sudake <sanketsudake@gmail.com>

* Few more errors

Signed-off-by: Sanket Sudake <sanketsudake@gmail.com>

* Fix golint errors

Signed-off-by: Sanket Sudake <sanketsudake@gmail.com>

---------

Signed-off-by: Sanket Sudake <sanketsudake@gmail.com>

cmd/fission-bundle/mqtrigger/mqtrigger.go

@@ -24,7 +24,6 @@ import (
 	"strings"
 	"time"
 
-	"github.com/pkg/errors"
 	"go.uber.org/zap"
 
 	fv1 "github.com/fission/fission/pkg/apis/core/v1"
@@ -41,12 +40,12 @@ import (
 func Start(ctx context.Context, clientGen crd.ClientGeneratorInterface, logger *zap.Logger, mgr manager.Interface, routerUrl string) error {
 	fissionClient, err := clientGen.GetFissionClient()
 	if err != nil {
-		return errors.Wrap(err, "failed to get fission client")
+		return fmt.Errorf("failed to get fission client: %w", err)
 	}
 
 	err = crd.WaitForFunctionCRDs(ctx, logger, fissionClient)
 	if err != nil {
-		return errors.Wrap(err, "error waiting for CRDs")
+		return fmt.Errorf("error waiting for CRDs: %w", err)
 	}
 
 	mqType := (fv1.MessageQueueType)(os.Getenv("MESSAGE_QUEUE_TYPE"))

cmd/fission-cli/app/app.go

@@ -14,7 +14,8 @@ limitations under the License.
 package app
 
 import (
-	"github.com/pkg/errors"
+	"fmt"
+
 	"github.com/spf13/cobra"
 
 	"github.com/fission/fission/pkg/fission-cli/cliwrapper/cli"
@@ -65,7 +66,7 @@ func App(clientOptions cmd.ClientOptions) *cobra.Command {
 				// }
 				client, err := cmd.NewClient(clientOptions)
 				if err != nil {
-					return errors.Wrap(err, "failed to get fission client")
+					return fmt.Errorf("failed to get fission client: %w", err)
 				}
 				cmd.SetClientset(*client)
 				return nil