bitbake.conf: Add few more binaries to HOSTTOOLS_NONFATAL

bitbake.conf: Add few more binaries to HOSTTOOLS_NONFATAL

* add: join nl size yes zcat

join    - netcf               - http://errors.yoctoproject.org/Errors/Details/135208/
join    - fontforge           - http://errors.yoctoproject.org/Errors/Details/135209/
nl      - dash                - http://errors.yoctoproject.org/Errors/Details/135215/
nl      - klibc               - http://errors.yoctoproject.org/Errors/Details/135198/
size    - iptraf              - http://errors.yoctoproject.org/Errors/Details/135204/
yes     - libnet-ssleay-perl  - http://errors.yoctoproject.org/Errors/Details/135197/
zcat    - scsirastools        - http://errors.yoctoproject.org/Errors/Details/135205/

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>