Merge pull request #2569 from T-X/pr-gluon-l3roamd-deprecate-node-client-prefix6

docs/user/site.rst

package/gluon-l3roamd/Makefile

package/gluon-l3roamd/check_site.lua

package/gluon-l3roamd/files/etc/init.d/gluon-l3roamd

package/gluon-mesh-babel/check_site.lua

...el/luasrc/lib/gluon/upgrade/300-gluon-mesh-babel-mkconfig

package/gluon-mesh-layer3-common/check_site.lua

.../gluon-mesh-layer3-common/luasrc/usr/lib/lua/gluon/l3.lua