Angular upgrade

	- Upgraded Angular from 14 to 15 version.

Change-Id: I2339a04020153cbc9ed7a14bfe8e0aa265e507da
Signed-off-by: SANDHYA.JS <sandhya.j@tataelxsi.co.in>
diff --git a/src/app/utilities/scaling/ScalingComponent.html b/src/app/utilities/scaling/ScalingComponent.html
index 10d5a16..fa6b960 100644
--- a/src/app/utilities/scaling/ScalingComponent.html
+++ b/src/app/utilities/scaling/ScalingComponent.html
@@ -23,7 +23,7 @@
 </div>
 <form [formGroup]="scalingForm" (ngSubmit)="manualScalingTrigger()" autocomplete="off">
     <div class="modal-body">
-        <div class="form-group row">
+        <div class="form-group row mb-3">
             <label class="col-sm-12 col-form-label mandatory-label"
                 [ngClass]="{'text-danger': scalingForm.invalid === true && submitted === true}">
                 {{'MANDATORYCHECK' | translate}}
@@ -37,7 +37,7 @@
                 <small class="form-text text-muted" *ngIf="selectedVNFID !== ''">vnfd-id : {{ selectedVNFID }}</small>
             </div>
         </div>
-        <div class="form-group row">
+        <div class="form-group row mb-3">
             <div class="col-sm-12">
                 <ng-select formControlName="scalingname" [clearable]="false" placeholder="Select scaling-aspect *"
                     [items]="scalingGroup" bindLabel="name" bindValue="id"
@@ -45,7 +45,7 @@
                 </ng-select>
             </div>
         </div>
-        <div class="form-group row">
+        <div class="form-group row mb-3">
             <div class="col-sm-12">
                 <ng-select formControlName="scaleType" [clearable]="false" placeholder="Select Scale Type *"
                     [items]="scaleTypes" bindLabel="name" bindValue="id"
diff --git a/src/app/utilities/scaling/ScalingComponent.ts b/src/app/utilities/scaling/ScalingComponent.ts
index be15660..46a257d 100644
--- a/src/app/utilities/scaling/ScalingComponent.ts
+++ b/src/app/utilities/scaling/ScalingComponent.ts
@@ -18,7 +18,6 @@
 /**
  * @file Scaling Component
  */
-import { isNullOrUndefined } from 'util';
 import { HttpHeaders } from '@angular/common/http';
 import { Component, Injector, Input, OnInit } from '@angular/core';
 import { AbstractControl, FormBuilder, FormGroup, Validators } from '@angular/forms';
@@ -28,7 +27,7 @@
 import { APIURLHEADER, ERRORDATA, MODALCLOSERESPONSEDATA, URLPARAMS } from 'CommonModel';
 import { environment } from 'environment';
 import { RestService } from 'RestService';
-import { SharedService } from 'SharedService';
+import { SharedService, isNullOrUndefined } from 'SharedService';
 import { DF, SCALING, VNFD } from 'VNFDModel';
 import { InstanceData, VNFInstanceDetails } from 'VNFInstanceModel';
 /**