Change azdata executions to point to kube config and cluster contexts (#13569)

extensions/arc/src/ui/dashboards/postgres/postgresComputeAndStoragePage.ts

@@ -156,10 +156,12 @@ export class PostgresComputeAndStoragePage extends DashboardPage {
 						},
 						async (_progress, _token): Promise<void> => {
 							try {
+								await this._postgresModel.controllerModel.azdataLogin();
 								await this._azdataApi.azdata.arc.postgres.server.edit(
 									this._postgresModel.info.name,
 									this.saveArgs,
-									this._postgresModel.engineVersion);
+									this._postgresModel.engineVersion
+								);
 							} catch (err) {
 								// If an error occurs while editing the instance then re-enable the save button since
 								// the edit wasn't successfully applied