User could delete/list local instances without acloud config

- check gcp project config before managing remote intances.
- cvd_runtime_config support parsing multiple instances data
  from config.
- Keep backward compatible for old style naming of cuttlefish home folder.

Bug: 148599118
Test: acloud-dev delete
Change-Id: I0ee8db6fa3324f7bc0dd7640d0c60700100e186f
6 files changed