Revert "MB-4695 allow http://<server-name> when adding node to cluster"

Apparently http_uri:parse/2 is not available in R14B04. It only has
parse/1.

This reverts commit 3506f1432c96777b23d0cd9f94d39f6558dcda66.

Change-Id: I6cc952bbb7079e50e218b27b4ff5f55af43d0785
Reviewed-on: http://review.couchbase.org/27888
Reviewed-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>
Tested-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>