Enable export and import of SDN configuration

resolves #269 (closed)

Related Issue

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.

controller/northbound/server/configurationmanagement.go

@@ -108,7 +108,6 @@ func (c ConfigurationManagementServer) ExportSDNConfig(ctx context.Context, requ
 // ImportSDNConfig receives an SDN configuration and imports it.
 func (c ConfigurationManagementServer) ImportSDNConfig(ctx context.Context, request *cmpb.ImportSDNConfigRequest) (*cmpb.ImportSDNConfigResponse, error) {
 	var sdnConfig = loadedSDNConfig{}
-
 	err := json.Unmarshal([]byte(request.SdnConfigData), &sdnConfig)
 	if err != nil {
 		return nil, err