* 08-border-router-cooja-frag.sh was using 01-border-router-cooja.csc
so if the test failed, the summary was wrongly indicating
a failed 01-board-router-cooja test
* same for 09-native-border-router-cooja-frag.sh
which has now it's own cooja configuration
* 05-native-ping was using 01-native-ping
* homogenizes the mode : all scripts are 644 now
