[KARAF-3115]add address flag when create a child instance
(cherry picked from commit 71aca23470605f7c78ae7d8bfa99ebef017a79b9)

Conflicts:
	instance/src/main/java/org/apache/karaf/instance/command/CreateCommand.java
	instance/src/main/java/org/apache/karaf/instance/core/InstanceSettings.java