Add testSendEmergencySms

Bug: 326893004
Test: adb shell device_config put telephony com.android.internal.telephony.flags.carrier_enabled_satellite_flag true

atest CtsTelephonyTestCases:CarrierRoamingSatelliteSmsTest

Change-Id: I9375b3c98289069a6ccd1060c70d17dac7de6e60