nginx may else fail to start if nginx installed but zram not synced
nginx may else fail to start if nginx installed but zram not synced

Fixes: #1716 

Signed-off-by: Markus Storm <13f764c248c89d89795bfe1bdc94e047d4204f8f@gmx.net>
openhab/openhabian,openhab/openhabian,openhab/openhabian