Sanders : Force enable mobile network settings v2

* AOSP defaults to true but 10 QC telephony extension sets it to false.
 * Restore AOSP behavior by enabling it with a system property which has
   higher priority over global system settings which is used by QCOM w/o
   modifying the jar.

Change-Id: I45854b91bb8cfafabfe811777cda9f1e1840febf

vendor_prop.mk

@@ -262,6 +262,7 @@ PRODUCT_PROPERTY_OVERRIDES += \
     persist.vendor.dpm.feature=0 \
     persist.vendor.radio.force_get_pref=1 \
     persist.radio.msgtunnel.start=true \
+    persist.sys.fflag.override.settings_network_and_internet_v2=true \
     persist.vendor.radio.no_wait_for_card=1 \
     persist.vendor.radio.oem_ind_to_both=0 \
     persist.vendor.radio.relay_oprt_change=1 \