allow to change service accounts for worker and apps

Signed-off-by: Pascal Sthamer <10992664+P4sca1@users.noreply.github.com>

functions/onprem/worker/worker.go

@@ -56,6 +56,7 @@ var logsDisabled = os.Getenv("SHUFFLE_LOGS_DISABLED")
 var cleanupEnv = strings.ToLower(os.Getenv("CLEANUP"))
 var swarmNetworkName = os.Getenv("SHUFFLE_SWARM_NETWORK_NAME")
 var dockerApiVersion = strings.ToLower(os.Getenv("DOCKER_API_VERSION"))
+var appServiceAccountName = os.Getenv("SHUFFLE_APP_SERVICE_ACCOUNT_NAME")
 
 var baseimagename = "frikky/shuffle"
 var kubernetesNamespace = os.Getenv("KUBERNETES_NAMESPACE")
@@ -105,11 +106,11 @@ var window = shuffle.NewTimeWindow(10 * time.Second)
 
 // Images to be autodeployed in the latest version of Shuffle.
 var autoDeploy = map[string]string{
-	"http:1.4.0":               "frikky/shuffle:http_1.4.0",
-	"http:1.3.0":               "frikky/shuffle:http_1.3.0",
-	"shuffle-tools:1.2.0":      "frikky/shuffle:shuffle-tools_1.2.0",
-	"shuffle-subflow:1.0.0":    "frikky/shuffle:shuffle-subflow_1.0.0",
-	"shuffle-subflow:1.1.0":    "frikky/shuffle:shuffle-subflow_1.1.0",
+	"http:1.4.0":            "frikky/shuffle:http_1.4.0",
+	"http:1.3.0":            "frikky/shuffle:http_1.3.0",
+	"shuffle-tools:1.2.0":   "frikky/shuffle:shuffle-tools_1.2.0",
+	"shuffle-subflow:1.0.0": "frikky/shuffle:shuffle-subflow_1.0.0",
+	"shuffle-subflow:1.1.0": "frikky/shuffle:shuffle-subflow_1.1.0",
 	// "shuffle-tools-fork:1.0.0": "frikky/shuffle:shuffle-tools-fork_1.0.0",
 }
 
@@ -592,6 +593,8 @@ func deployk8sApp(image string, identifier string, env []string) error {
 							Env:   buildEnvVars(envMap),
 						},
 					},
+					DNSPolicy:          corev1.DNSClusterFirst,
+					ServiceAccountName: appServiceAccountName},
 				},
 			},
 		},