CLOUDSTACK-4231 make apache server listen on all the ipaliases to provide access to meta-data.

Signed-off-by: Jayapal <jayapal@apache.org>
CLOUDSTACK-4111: Prompt "Acquire New IP - Cross Zones - YES/NO" wizard
only when there is portable IP range added at region level.

region response will now have details if portable IP service is enabled
or not. Portable IP service for a region is turned off by default. when
adming adds a portable ip range portable ip service is enabled for the
region.