Go back to the old serial number with an underscore
Go back to the old serial number with an underscore

BUG: 64811368

This reverts commit d82b5016a3786425aa3fd200713dd3eb7afc66c5.

Change-Id: I9b939cd597ac6f00b57b9c7be294097b4d68fa40

google/android-cuttlefish,google/android-cuttlefish,google/android-cuttlefish,google/android-cuttlefish,google/android-cuttlefish,google/android-cuttlefish,google/android-cuttlefish