contrib: alpine: update to use env: files for service arguments

- Check for env in /etc/conf.d on Alpine
- Update all services with their respective env: file
- Disable default modules, noew modprobe plugin should handle this
- Add watchdog service
- Rename syslogd -> syslog, in case we want to integrate sysklogd

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>

contrib/alpine/finit.d/available/modules.conf

@@ -1,6 +1,6 @@
 ## Linux kernel modules to load
 #module fbcon
-module button
-module evdev
-module mousedev
-module 8139cp
+#module button
+#module evdev
+#module mousedev
+#module 8139cp