Add new vendor interface to configure FILS specific settings in network
block to supplicant. Implement a new hal interface
SupplicantVendorStaNetwork, SupplicantVendorStaIface and
SupplicantVendorStaIfaceCallback extending SupplicantStaNework,
SupplicantStaIface and SupplicantStaIfaceCallback respectively to
accommodate the new FILS specific fields.
Change-Id: Ieb222396bf490a99c3b8c7748888208380abf200
CRs-Fixed: 2097930