dbus-modem v0.17

Update velib-python.
- Make sure patch are available before announcing on the dbus.
  - victronenergy/venus#1310
- Add GetItems so dbus-spy works properly again.
Up / down the ppp log service as well.

meta-ve-software/recipes-ve/dbus-modem_0.16.bb → meta-ve-software/recipes-ve/dbus-modem_0.17.bb

@@ -20,7 +20,7 @@ SRC_URI = " \
     file://start-modem.sh \
     file://reset-modem.sh \
 "
-SRCREV = "1d116a4bfb29b296c69d8a3a04430057c5711429"
+SRCREV = "fa64eb6f4f1fddfdc2c51ef90f636fc70d5635d6"
 S = "${WORKDIR}/git"
 
 DAEMONTOOLS_RUN = "${bindir}/start-modem.sh TTY"