Move generic agent flags to cmd/agent/core (#3484)

cmd/agent/core/flags.go

@@ -97,4 +97,16 @@ var flags = []cli.Flag{
 		Usage:   "backend to run pipelines on",
 		Value:   "auto-detect",
 	},
+	&cli.IntFlag{
+		EnvVars: []string{"WOODPECKER_CONNECT_RETRY_COUNT"},
+		Name:    "connect-retry-count",
+		Usage:   "number of times to retry connecting to the server",
+		Value:   5,
+	},
+	&cli.DurationFlag{
+		EnvVars: []string{"WOODPECKER_CONNECT_RETRY_DELAY"},
+		Name:    "connect-retry-delay",
+		Usage:   "duration to wait before retrying to connect to the server",
+		Value:   time.Second * 2,
+	},
 }