Add health and metrics port mapping for placement stand-alone mode (#…

…1323)

* Add health and metrics port mapping for placement stand-alone mode

Signed-off-by: Anton Troshin <anton@diagrid.io>

* move ports declaration to const

Signed-off-by: Anton Troshin <anton@diagrid.io>

* Fix linter check: appendCombine: can combine chain of 3 appends into one (gocritic)

Signed-off-by: Anton Troshin <anton@diagrid.io>

---------

Signed-off-by: Anton Troshin <anton@diagrid.io>
Co-authored-by: Artur Souza <artursouza.ms@outlook.com>

pkg/standalone/standalone.go

@@ -78,6 +78,9 @@ const (
 	DaprZipkinContainerName = "dapr_zipkin"
 
 	errInstallTemplate = "please run `dapr uninstall` first before running `dapr init`"
+
+	healthPort = 58080
+	metricPort = 59090
 )
 
 var (
@@ -520,7 +523,10 @@ func runPlacementService(wg *sync.WaitGroup, errorChan chan<- error, info initIn
 		}
 
 		args = append(args,
-			"-p", fmt.Sprintf("%v:50005", osPort))
+			"-p", fmt.Sprintf("%v:50005", osPort),
+			"-p", fmt.Sprintf("%v:8080", healthPort),
+			"-p", fmt.Sprintf("%v:9090", metricPort),
+		)
 	}
 
 	args = append(args, image)