Mesh nodes would need a significant amount of configuration
including some operational checks everytime an interface comes up
to be able to handle this.
The more sane method is to only allow a node to be a mesh_gw when
the WAN port is utilized and the node is in DIRECT mode.
This changes the UI to prevent this setup from being allowed.
fixes AREDN->ticket:184
Change-Id: I1a1289bc914a349149f5842812dbebc0a70442f7
Some settings would not copy correctly and would fall back to the config default due to faulty if checks logic when the value was set to 0 ending up in if(0) checks.
nvram-setup may be the only script we have to worry about as it may call configs for interfaces that do not exist in the current mode.
By default get_interface will return a static mapping when it can't find an active config entry meaning that eventually get_interface will need an update routine to pull out of local running config
The lack of this update routine should be acceptable for now as we have no GUI for users to change the mapping.
By checking the "Keep Settings" box the node will run sysupgrade instead of mtd. Core settings are stored between installs and the _setup files are updated by pulling in missing items from the _setup.default files.
Conrad Lara - KG6JEI