Convert gsid to use the dynamic AIDL service infrastructure

Replace the original on demand start mechanism with the new dynamic
AIDL service infrastructure to resolve a possible race condition.

Bug: 149130673
Test: adb shell am start-activity \
    -n com.android.dynsystem/com.android.dynsystem.VerificationActivity \
    -a android.os.image.action.START_INSTALL \
    -d file:///storage/emulated/0/Download/system.raw.gz \
    --el KEY_SYSTEM_SIZE $(du -b system.raw|cut -f1) \
    --el KEY_USERDATA_SIZE 858993459

Change-Id: Ic6b91d6f4df9d5910ee4d05721f76e53e23a5c48