Xtra Fixes - https, version check & version 3

Tells Qualcomm GPS hardware to:
1) Use https
2) Use the more secture version 3 file
3) Check that the
XTRA file version downloaded matches the version
expected - i.e. the more secure (signed) version 3

Test: On device, via adb push/pull, watched
Xtra download logs and confirmed GPS acted as if Xtra
assisted

Bug: 31470303
Change-Id: Ib2a1b9ec9be32f842a158c05fa2ba04cb0262b76
diff --git a/gps.conf b/gps.conf
index fb22f47..56e393b 100644
--- a/gps.conf
+++ b/gps.conf
@@ -1,15 +1,14 @@
-#Uncommenting these urls would only enable
-#the power up auto injection and force injection(test case).
-#XTRA_SERVER_1=http://xtrapath1.izatcloud.net/xtra3grc.bin
-#XTRA_SERVER_2=http://xtrapath2.izatcloud.net/xtra3grc.bin
-#XTRA_SERVER_3=http://xtrapath3.izatcloud.net/xtra3grc.bin
+#URLs from which to download XTRA data
+XTRA_SERVER_1=https://xtrapath1.izatcloud.net/xtra3grc.bin
+XTRA_SERVER_2=https://xtrapath2.izatcloud.net/xtra3grc.bin
+XTRA_SERVER_3=https://xtrapath3.izatcloud.net/xtra3grc.bin
 
 #Version check for XTRA
 #DISABLE = 0
 #AUTO    = 1
 #XTRA2   = 2
 #XTRA3   = 3
-XTRA_VERSION_CHECK=0
+XTRA_VERSION_CHECK=1
 
 # Error Estimate
 # _SET = 1