add testing on public VM / laptop

[iricigor]

Destination

• add tests that run on laptop
• add tests that run on public VM
• check if those can be the same tests (i.e. do first on Azure VM, and check behavior on laptops)

Test structure

• some tests should work, like azmi <subcommand> --help
• some tests that work in normal integration tests, should now fail
  for example azmi getsecret -uri somethingvalid

[iricigor]

Handle additional error cases like
azmi gettoken: [Azure.Identity.CredentialUnavailableException] ManagedIdentityCredential authentication unavailable, no managed identity endpoint found.
this one should be thrown back even if identity is not specified