Revert "MB-10415 use temp auth token for cluster join"

This reverts commit 75b516eb23fa33252c78a0a4b388e45bab401945.

Change-Id: If082250cf71cc090454e7666d0f2974c08e8a800
Reviewed-on: http://review.couchbase.org/35224
Reviewed-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>
Tested-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>