bumping version to 0.4.0-SNAPSHOT
bumping version to 0.4.0-SNAPSHOT

Change-Id: I652f7bdb2b075e27e836926a81ee8d8024f2070f

opennetworkinglab/spring-open,opennetworkinglab/spring-open,opennetworkinglab/spring-open,opennetworkinglab/spring-open,opennetworkinglab/spring-open,opennetworkinglab/spring-open