BUG-944 Fix HostBuilder class conflict for domain/ipv4 address

Ipv4 addresses were matched by ipv4 as well as domain-name pattern in HostBuilder class, which caused a conflict.

Now ipv4 pattern is prefered to domain-name.

Change-Id: Ia449d247c04747d6ca50856f92d3aa77b581e60f
Signed-off-by: Maros Marsalek <mmarsale@cisco.com>