Use internal IP if specified. Else on Linux it is not matching the expecting interface name.

Change-Id: I62c766a3ef8dd1dac6831a5fbc986e555b14586b
Signed-off-by: Florent BENOIT <fbenoit@codenvy.com>

Author: benoitf

plugins/plugin-docker/che-plugin-docker-machine/src/main/java/org/eclipse/che/plugin/docker/machine/CustomServerEvaluationStrategy.java

@@ -205,6 +205,8 @@ protected OnlineRenderingEvaluation withInternalHost(String internalHost) {
         protected String getExternalAddress() {
             return externalAddressProperty != null ?
                    externalAddressProperty :
+                   internalAddressProperty != null ?
+                   internalAddressProperty :
                    !isNullOrEmpty(gatewayAddressContainer) ?
                    gatewayAddressContainer :
                    this.internalHost;