Make sure the private key can be used to acloud reconnect.

Take off the CMD_SSHKEY command.

Bug: 122744074
Bug: 126447066

Test: uatest acloud_test && m acloud
1) Use laptop to create avd and reconnecting from your other
workstation.
2) change your ssh_private_key_path and ssh_public_key_path to acloud
reconnect it.
Change-Id: I050a5473aed4579d414d217c999f892c8116393b
5 files changed