Move hostIP detection from master to server

Add PublicAddress in test files

Move valid public addr into util

test/integration/scheduler_test.go

@@ -22,6 +22,7 @@ package integration
 
 import (
 	"fmt"
+	"net"
 	"net/http"
 	"net/http/httptest"
 	"sync"
@@ -91,6 +92,7 @@ func TestUnschedulableNodes(t *testing.T) {
 		Authorizer:            apiserver.NewAlwaysAllowAuthorizer(),
 		AdmissionControl:      admit.NewAlwaysAdmit(),
 		StorageVersions:       storageVersions,
+		PublicAddress:         net.ParseIP("192.168.10.4"),
 	})
 
 	restClient := client.NewOrDie(&client.Config{Host: s.URL, GroupVersion: testapi.Default.GroupVersion()})
@@ -341,6 +343,7 @@ func BenchmarkScheduling(b *testing.B) {
 		Authorizer:            apiserver.NewAlwaysAllowAuthorizer(),
 		AdmissionControl:      admit.NewAlwaysAdmit(),
 		StorageVersions:       storageVersions,
+		PublicAddress:         net.ParseIP("192.168.10.4"),
 	})
 
 	c := client.NewOrDie(&client.Config{