BUG 1175 Unable to execute VNF-Level Primitives

 * Fixed the bug the for the Primitives Level execution.

Change-Id: I3ac9bf309037666d17ac11c80f350fefbe2f98e7
Signed-off-by: Barath Kumar R <barath.r@tataelxsi.co.in>
diff --git a/src/app/instances/ns-primitive/NSPrimitiveComponent.html b/src/app/instances/ns-primitive/NSPrimitiveComponent.html
index 3c96d80..324642a 100644
--- a/src/app/instances/ns-primitive/NSPrimitiveComponent.html
+++ b/src/app/instances/ns-primitive/NSPrimitiveComponent.html
@@ -29,7 +29,8 @@
                 <ng-select (change)="primitiveTypeChange($event)" [clearable]="false"
                     placeholder="{{'SELECT' | translate}}" [items]="primitiveTypeList" bindLabel="title"
                     bindValue="value" [(ngModel)]="primitiveType" id="primitiveType"
-                    [ngModelOptions]="{standalone: true}"></ng-select>
+                    [ngModelOptions]="{standalone: true}"
+                    [ngClass]="{ 'is-invalid': submitted && !primitiveType }"></ng-select>
             </div>
         </div>
         <div class="form-group row" *ngIf="primitiveType === 'VNF_Primitive' || primitiveType === 'VDU_Primitive'">