Add godoc to justify use of developmentRedirectURI

Spawned from:
openshift#10895 (comment)

This patch adds a brief explanation for the use of "localhost:9000" as a
default develppment redirect URI in the `oc cluster up` setup.

pkg/bootstrap/docker/up.go

@@ -47,8 +47,9 @@ const (
 	initialProjectDisplay = "My Project"
 	initialProjectDesc    = "Initial developer project"
 
-	defaultRedirectClient  = "openshift-web-console"
+	// developmentRedirectURI is a default redirect to enable out-of-the-box web-console development against a cluster up server
 	developmentRedirectURI = "https://localhost:9000"
+	defaultRedirectClient  = "openshift-web-console"
 
 	defaultImages         = "openshift/origin-${component}:${version}"
 	defaultOpenShiftImage = "openshift/origin:${version}"