Update astyle filtering rules
Update astyle filtering rules

Enable astyle for:
-components/802.15.4
-features/nanostack/coap-service

Allow astyle formatting for sal-stack-nanostack, except:
-features/nanostack/sal-stack-nanostack/source/Service_Libs/mdns/fnet

kjbracey-arm/mbed,mbedmicro/mbed,mbedmicro/mbed,kjbracey-arm/mbed,mbedmicro/mbed,mbedmicro/mbed,kjbracey-arm/mbed,mbedmicro/mbed,kjbracey-arm/mbed