Initiate Burmilla OS project

- Use burmilla GitHub repos
- Release under burmilla Docker Hub
- GitHub action for create releases
- Updated boot image and login banner
- Use Debian as default console
- Updated system-cron to v0.5.0
- Updated services to latest versions
- Bump up kernel to 4.14.206
- Include burmilla/os-debianconsole:v1.9.0 to initrd

scripts/layout-kernel

@@ -64,3 +64,7 @@ if [ "$ARCH" == "amd64" ]; then
     fi
 fi
 
+if [ "$OS_FIRMWARE" = "false" ]; then
+    # the cloud images don't need firmware
+    rm -rf ${INITRD_DIR}/usr/lib/firmware
+fi