Fix the bug about acloud list with multiple instances

There is one issue when "cvd status" lists multiple instances.
Acloud specifies the instance name in "cvd status" can fix it.

Bug: 214582360
Test: acloud-dev create --local-instance --launch-args="-num_instances=2"
      acloud-dev list -vv
Change-Id: Ib60976e9e226a58586fb81270c7e283a74e95f40
3 files changed