Handle empty /proc/sys/net/ipv4/ip_local_reserver_ports.

Change-Id: I825c856fad8959caa4ce0fbd1492c4cb230d2d41
keeping icehouse on qemu and reverted back other openstack releases to kvm for nova-compute

Change-Id: I87e90f06afddab9a61844d1cf665b157532178a1
Merge "keeping icehouse on qemu and reverted back other openstack releases to kvm for nova-compute"
Adding cmon support.