added REST API endpoint to OpenStack example to have son-emu-cli working
added REST API endpoint to OpenStack example to have son-emu-cli working

stevenvanrossem/son-emu,mpeuster/son-emu,stevenvanrossem/son-emu,stevenvanrossem/son-emu,mpeuster/son-emu,stevenvanrossem/son-emu,mpeuster/son-emu,mpeuster/son-emu