upgrade go chassis to 1.4.2 (#50)

diff --git a/go.mod b/go.mod
index 04a1ad5..73549f7 100644
--- a/go.mod
+++ b/go.mod
@@ -6,9 +6,9 @@
 	github.com/envoyproxy/go-control-plane v0.6.0
 	github.com/ghodss/yaml v1.0.0 // indirect
 	github.com/go-chassis/foundation v0.0.0-20190516083152-b8b2476b6db7
-	github.com/go-chassis/go-archaius v0.16.0
+	github.com/go-chassis/go-archaius v0.18.0
 	github.com/go-chassis/go-cc-client v0.7.0
-	github.com/go-chassis/go-chassis v1.4.1
+	github.com/go-chassis/go-chassis v1.4.3
 	github.com/go-chassis/gohessian v0.0.0-20180702061429-e5130c25af55
 	github.com/go-mesh/openlogging v0.0.0-20181205082104-3d418c478b2d
 	github.com/gogo/googleapis v1.1.0 // indirect
diff --git a/pkg/egress/archaius/egress_manager.go b/pkg/egress/archaius/egress_manager.go
index 23d642d..e7e31da 100644
--- a/pkg/egress/archaius/egress_manager.go
+++ b/pkg/egress/archaius/egress_manager.go
@@ -24,7 +24,7 @@
 
 	"github.com/go-chassis/go-archaius"
 	"github.com/go-chassis/go-archaius/core"
-	"github.com/go-chassis/go-archaius/sources/file-source"
+	"github.com/go-chassis/go-archaius/sources/utils"
 	"github.com/go-chassis/go-chassis/core/lager"
 	"github.com/go-chassis/go-chassis/pkg/util/fileutil"
 	"github.com/go-mesh/mesher/config"
@@ -76,7 +76,7 @@
 // initialize the config mgr and add several sources
 func initEgressManager() error {
 	egressListener := &egressRuleEventListener{}
-	archaius.AddFile(filepath.Join(fileutil.GetConfDir(), EgressYaml), archaius.WithFileHandler(filesource.Convert2configMap))
+	archaius.AddFile(filepath.Join(fileutil.GetConfDir(), EgressYaml), archaius.WithFileHandler(utils.Convert2configMap))
 	archaius.RegisterListener(egressListener, ".*")
 
 	return nil