Migrating XTRA from gpsonextra.net to cloud based izatcloud.net

*Added logic to remove xtra1.gpsonextra.net from URLs received from modem
*Added logic to override modem URLs with those configured in gps.conf
*Replaced all instances of xtra{1,2,3}.gpsonextra.net domain URLs in gps.conf
with xtrapath{1,2,3}.izatcloud.net URLs.
*Replaced all commented instances of xtra.bin in gps.conf with xtra2.bin.

Change-Id: I72908809a1698da06181fc0667f163c3dcfd0f72
CRs-fixed: 643816
Rename SettingsProvider config.xml to defaults.xml

Change-Id: Ied4750b05b39bfaaa82400c9bfd9736b919bbebd
ks01lte: Check and don't panic on data partition errors. Cleanup.

Change-Id: I2e8b030334b613168c4c93bc77ad67d89751fedf