Bumping onos-maven-plugin to 2.2-SNAPSHOT.
Bumping onos-maven-plugin to 2.2-SNAPSHOT.

Change-Id: I32dcc2ab8367989d36655fa9071aee3b0ff228d8

gkatsikas/onos,opennetworkinglab/onos,oplinkoms/onos,opennetworkinglab/onos,gkatsikas/onos,opennetworkinglab/onos,gkatsikas/onos,gkatsikas/onos,opennetworkinglab/onos,opennetworkinglab/onos,opennetworkinglab/onos,oplinkoms/onos,oplinkoms/onos,oplinkoms/onos,oplinkoms/onos,oplinkoms/onos,gkatsikas/onos,gkatsikas/onos,oplinkoms/onos