flexroad: coovachilli, saha* packages

* update CoovaChilli configuration for FlexRoad HS
* new saha* packages for b.a.t.m.a.n router/gateway images
* update coova-chilli default settings

Signed-off-by: Ildar Abubakirov <ildar.abubakirov@componentality.com>
Merge branch 'flexroad-dev-1' of github.com:Componentality/FlexRoad-Packages into flexroad-dev-1

Conflicts:
	net/coova-chilli/files/defaults

Signed-off-by: Ildar Abubakirov <ildar.abubakirov@gmail.com>