Handle & Log Initial Backup Creation Errors

Errors are now handled and logged when creating an initial cluster
backup pgtask following a successful stanza-create Job.

Author: andrewlecuyer

internal/controller/job/backresthandler.go

@@ -167,8 +167,11 @@ func (c *Controller) handleBackrestStanzaCreateUpdate(job *apiv1.Job) error {
 			return err
 		}
 
-		_, _ = backrest.CreateInitialBackup(c.Client, job.ObjectMeta.Namespace,
-			clusterName, backrestRepoPodName)
+		if _, err := backrest.CreateInitialBackup(c.Client, job.ObjectMeta.Namespace,
+			clusterName, backrestRepoPodName); err != nil {
+			log.Error(err)
+			return err
+		}
 
 		// now that the initial backup has been initiated, proceed with deleting the stanza-create
 		// pgtask and associated Job.  This will ensure any subsequent updates to the stanza-create