Modify Advanced 4G Option to call new API in ImsManager.
Modify Advanced 4G Option to call new API in ImsManager.

Additionally: changed logic so that setting always succeeds whether or
not ImsManager call succeeded.

Change-Id: I2fdb6798f2beaf0fafbb838d5c59e691e21d3ed6

md5555/android_packages_services_Telephony