Merge commit 'b6f59f48' into master_merge

         provisioning, availability etc -->

    <bool name="config_carrier_volte_available">true</bool>

    <!-- Flag specifying whether VT should be available for carrier: independent of

         carrier provisioning. If false: hard disabled. If true: then depends on carrier

         provisioning, availability etc -->

    <bool name="config_carrier_vt_available">true</bool>

    <!-- Flag specifying whether VoLTE availability is based on provisioning -->

    <bool name="config_carrier_volte_provisioned">true</bool>