Stfaseid http refactor

Description

Draft for new API. Needs extensive manual testing. Only merge if changes in https://code.fbi.h-da.de/danet/api/-/tree/10-refactor-current-proto-definitions-stfahelm and upcoming changes to CLI are approved.

Related Issue

#141 (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.

nucleus/southbound_test.go

@@ -166,8 +166,8 @@ func Test_unmarshal(t *testing.T) {
 			}
 			bytes := resp.Notification[0].Update[0].Val.GetJsonIetfVal()
 			oc, err := NewSBI(spb.Type_TYPE_OPENCONFIG)
-			if (err != nil) != tt.wantErr {
-				t.Errorf("Unmarshal() error = %v, wantErr %v", err, tt.wantErr)
+			if err != nil {
+				t.Errorf("unmarshal() error = %v", err)
 				return
 			}