MB-11063 Explicitly specify loopback address when querying names.

In the referred ticket erl_epmd failed to connect to epmd on the
address that it got from inet:gethostname +
inet:gethostbyname. Alleged error was ehostunreach. I'm not sure why
and how it exactly happened, but hopefully just going to 127.0.0.1
directly will avoid the problem.

Change-Id: I98d2c35fce015365964cc2997390e87fa4777b52
Reviewed-on: http://review.couchbase.org/36798
Tested-by: Aliaksey Artamonau <aliaksiej.artamonau@gmail.com>
Reviewed-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>