[ADF-4066] Start task form with no assignee is saved as unassigned task (#4347)

* in progress

* in progress

* ADF-4012 pull request ready

* crc's

* crc's - moved the methods ProcessListCloudComponent to dataTablePage, to keep it common.

* crc's - moved the methods ProcessListCloudComponent to dataTablePage, to keep it common.

* changed the locator to use data-automation-id

* linting fix

* test automated - C268974

* test automated - C268974

* crc's

* crc's

* crc's

* crc's

* linting fix

* added automation for C276980 - Duplicate User or Group

* merged the overlapping testcases

* Changed  checkUserHasRoleSelected to use datatable methods

* changed hte usernames to something more relevant and readable.

* [ADF-4066] Should create a task unassigned when assignee field is empty … (#4334)

* C297675 Should create a task unassigned when assignee field is empty in Start Task form automated

* linting fixes and updated some locators which are returning more than 1 result back when running this test, as part of best practices.

* using hte new method added as it's more efficient, getIdCellValue

* linting fixes

* updates

* updated the taskname variables to more meaningful ones.

* added data-automation-id for better test locators.

demo-shell/src/app/components/app-layout/cloud/task-details-cloud-demo.component.html

@@ -3,7 +3,7 @@
     <mat-icon>arrow_back</mat-icon> Go Back
 </button>
 
-<h4>Simple page to show the taskId: {{ taskId }} of the app: {{ appName }}</h4>
+<h4 data-automation-id="task-details-header">Simple page to show the taskId: {{ taskId }} of the app: {{ appName }}</h4>
 
 <adf-cloud-task-header
     [appName]="appName"