Gentoo Linux was not supported by the node_health_check script which resulted in the following error message displayed: "This s a Non-Supported OS, Please Review the Support Matrix" This patch adds support for Gentoo Linux while adding a TODO note to add support for authenticated clusters which the script does not support yet. Signed-off-by: Alexys Jacob <ultrabug@gentoo.org> Message-Id: <20180703124458.3788-1-ultrabug@gentoo.org>