luci-app-olsr: depend on luci-lib-json
luci-app-olsr: depend on luci-lib-json

backport of https://github.com/openwrt/luci/commit/ba897c6a209eec3a4ea447a66407a385170ccb80

Signed-off-by: Sven Roederer <f304a8489b18cb178859c91cbdfec17ca74fbd64@geroedel.de>

db260179/openwrt-bpi-r1-luci,RuiChen1113/luci,db260179/openwrt-bpi-r1-luci,RuiChen1113/luci,db260179/openwrt-bpi-r1-luci,db260179/openwrt-bpi-r1-luci,RuiChen1113/luci,RuiChen1113/luci,RuiChen1113/luci,db260179/openwrt-bpi-r1-luci,RuiChen1113/luci,RuiChen1113/luci,db260179/openwrt-bpi-r1-luci,RuiChen1113/luci,db260179/openwrt-bpi-r1-luci,db260179/openwrt-bpi-r1-luci