[MDC-641] simetbox-openwrt-simet-ma, simet-lmapd: lessen load on boot

[MDC-641] simetbox-openwrt-simet-ma, simet-lmapd: lessen load on boot

Delay the start of lmapd for 120s from boot, and also avoid running
the geolocation scripts at the same time as the schedule fetch scripts.

This avoids a RAM overload scenario on 32MiB RAM devices.