Merge "Add help text for `fastboot gsi status`" into main am: 7e32f6f9

Original change: https://android-review.googlesource.com/c/platform/system/core/+/2892384



Change-Id: I6e8b2f98852bcc808be253e7d0b22992bcaf88d1
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>