IMS-VT: Disable multi tasking by default

Disable multi tasking support by default for all operators.
Enable based on MCC/MNC for required oeprators.

Change-Id: Ib321747885435c110360370eb243eee35762dfe3
CRs-Fixed: 954657

Author: Suresh Koleti

telephony/java/android/telephony/CarrierConfigManager.java

@@ -543,7 +543,7 @@ public CarrierConfigManager() {
         sDefaults.putBoolean(KEY_SHOW_CDMA_CHOICES_BOOL, false);
         sDefaults.putBoolean(KEY_SHOW_ONSCREEN_DIAL_BUTTON_BOOL, true);
         sDefaults.putBoolean(KEY_SIM_NETWORK_UNLOCK_ALLOW_DISMISS_BOOL, true);
-        sDefaults.putBoolean(KEY_SUPPORT_PAUSE_IMS_VIDEO_CALLS_BOOL, true);
+        sDefaults.putBoolean(KEY_SUPPORT_PAUSE_IMS_VIDEO_CALLS_BOOL, false);
         sDefaults.putBoolean(KEY_SUPPORT_SWAP_AFTER_MERGE_BOOL, true);
         sDefaults.putBoolean(KEY_USE_HFA_FOR_PROVISIONING_BOOL, false);
         sDefaults.putBoolean(KEY_USE_OTASP_FOR_PROVISIONING_BOOL, false);