Improve usability and better output formatting for gosndc

Description

Related Issue

#188 (closed)

Motivation and Context

How Has This Been Tested?

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.

cli/adapter/PndAdapter.go

@@ -11,7 +11,6 @@ import (
 	"code.fbi.h-da.de/danet/gosdn/controller/nucleus/errors"
 	"github.com/google/uuid"
 	"github.com/openconfig/goyang/pkg/yang"
-	log "github.com/sirupsen/logrus"
 	"golang.org/x/sync/errgroup"
 	"google.golang.org/protobuf/proto"
 )
@@ -106,17 +105,16 @@ func (p *PndAdapter) RemovePnd(pid uuid.UUID) (*core.DeletePndResponse, error) {
 // ChangeOND sends an API call to the controller requesting the creation of
 // a change from the provided Operation, path and value. The Change is marked
 // as Pending and times out after the specified timeout period
-func (p *PndAdapter) ChangeOND(duid uuid.UUID, operation ppb.ApiOperation, path string, value ...string) (uuid.UUID, error) {
+func (p *PndAdapter) ChangeOND(duid uuid.UUID, operation ppb.ApiOperation, path string, value ...string) (*ppb.SetPathListResponse, error) {
 	var v string
 	if len(value) != 0 {
 		v = value[0]
 	}
 	resp, err := api.ChangeRequest(p.endpoint, duid.String(), p.id.String(), path, v, operation)
 	if err != nil {
-		return uuid.Nil, err
+		return nil, err
 	}
-	log.Info(resp)
-	return uuid.Nil, err
+	return resp, err
 }
 
 // Request sends an API call to the controller requesting the specified path
@@ -221,23 +219,21 @@ func (p *PndAdapter) GetChange(uuid.UUID) (change.Change, error) {
 }
 
 // Commit sends an API call to the controller committing the specified change
-func (p *PndAdapter) Commit(cuid uuid.UUID) error {
+func (p *PndAdapter) Commit(cuid uuid.UUID) (*ppb.SetChangeListResponse, error) {
 	resp, err := api.Commit(p.endpoint, p.id.String(), cuid.String())
 	if err != nil {
-		return err
+		return nil, err
 	}
-	log.Info(resp)
-	return nil
+	return resp, nil
 }
 
 // Confirm sends an API call to the controller confirming the specified change
-func (p *PndAdapter) Confirm(cuid uuid.UUID) error {
+func (p *PndAdapter) Confirm(cuid uuid.UUID) (*ppb.SetChangeListResponse, error) {
 	resp, err := api.Confirm(p.endpoint, p.id.String(), cuid.String())
 	if err != nil {
-		return err
+		return nil, err
 	}
-	log.Info(resp)
-	return nil
+	return resp, nil
 }
 
 func filterChanges(state ppb.ChangeState, resp *ppb.GetChangeListResponse) []uuid.UUID {