Revert "MB-10415 moxi and sample loader should use auth token instead"

This reverts commit 48b196be27937014075b6aebfe39ca661b122ba3.

I've found that moxi is being restarted on every config change. The is
due to check_childs_update logic in ns_ports_setup and due to auth
token being new every time.

Conflicts:
	src/menelaus_web.erl

Change-Id: Ie3dee97a1e136e458a37b9809c8410be00127c9f
Reviewed-on: http://review.couchbase.org/35225
Reviewed-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>
Tested-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>