Corrected license headers for genproto.sh scripts

src/compute/genproto.sh

src/context/genproto.sh

src/dbscanserving/genproto.sh

src/device/genproto.sh

src/interdomain/genproto.sh

src/l3_attackmitigator/genproto.sh

src/l3_centralizedattackdetector/genproto.sh

src/l3_distributedattackdetector/genproto.sh

src/monitoring/genproto.sh

src/opticalattackmitigator/genproto.sh

src/opticalcentralizedattackdetector/genproto.sh

src/service/genproto.sh

src/slice/genproto.sh

src/webui/genproto.sh