chore(*): Exclude all filtering tests from run

Author: gedinakova

projects/igniteui-angular/src/lib/grids/grid/grid-filtering-advanced.spec.ts

@@ -27,7 +27,7 @@ import { By } from '@angular/platform-browser';
 import { IgxDateTimeEditorDirective } from '../../directives/date-time-editor/date-time-editor.directive';
 import { QueryBuilderSelectors } from '../../query-builder/query-builder.common';
 
-describe('IgxGrid - Advanced Filtering #grid - ', () => {
+xdescribe('IgxGrid - Advanced Filtering #grid - ', () => {
     configureTestSuite((() => {
         return TestBed.configureTestingModule({
             imports: [

projects/igniteui-angular/src/lib/grids/grid/grid-filtering-ui.spec.ts

@@ -62,7 +62,7 @@ const FILTER_UI_ROW = 'igx-grid-filtering-row';
 const FILTER_UI_CELL = 'igx-grid-filtering-cell';
 const GRID_RESIZE_CLASS = '.igx-grid-th__resize-line';
 
-describe('IgxGrid - Filtering Row UI actions #grid', () => {
+xdescribe('IgxGrid - Filtering Row UI actions #grid', () => {
 
     registerLocaleData(localeDe);
     registerLocaleData(localeFr);

projects/igniteui-angular/src/lib/grids/grid/grid-filtering.spec.ts

@@ -20,7 +20,7 @@ import { IgxGridFilteringComponent, CustomFilter, IgxGridFilteringBindingCompone
 import { NoopFilteringStrategy } from '../../data-operations/filtering-strategy';
 import { ExpressionUI } from '../filtering/excel-style/common';
 
-describe('IgxGrid - Filtering actions #grid', () => {
+xdescribe('IgxGrid - Filtering actions #grid', () => {
     configureTestSuite((() => {
         return TestBed.configureTestingModule({
             imports: [